| NAME | TIME FRAME | LOCATION | ADDRESS |
| Abbott | 1840 - Present | VT, WI | John Gamerdinger |
| Ackermann | 1800 - 1920 | GER, WI | Betty Andrews Storey |
| Ackermann | 1863 - Present | GER, OH | Frances Ackermann |
| Adams | 1650 - Present | ENG, CAN | Margaret Kurzynski |
| Adams | 1755 - Present | Devonshire, ENG | Tom Keyes |
| Alexander | 1800 - Present | IRE, ENG, NY, CT | Lowell Alexander |
| Alexander | 1830 - Present | SCOT, CAN, OH, WI | Susan Lind |
| Allmann | 1820 - 1935 | GER, NY, WI | Russell R. Retzack |
| Andrews | 1620 - Present | ENG, Essex Co., MA | Betty Andrews Storey |
| Arndt | 1850 - Present | IL, WI | Steve Arndt |
| Arnold | 1800 - 1900 | OH, IN | Richard O'Connor |
| Arthurs | 1757 - 1841 | PA | Laurel Ingram |
| Aschoff | 1850 - 1950 | SD | James Muhlenhaupt |
| Augustyn | 1820 - 1867 | Galicia, SPN | John Cieslewicz |
| Auth | 1750 - Present | GER, USA | Marge Wilmes |
| Bain | 1650 - Present | SCOT, MI, WI | Margaret Kurzynski |
| Baker | 1700 - 1900 | MD, MA | Cindy Schofield |
| Baldwin | 1600 - Present | ENG, NY, WI | Mary Ellen Timm |
| Ball | 1820 - Present | IRE, MA, WI | Maureen Schulz |
| Ballard | 1805 - 1875 | CT, WI | Art Clark |
| Banach | 1879 - Present | POL, WI | Frances Peg Mandery Hart |
| Bandhauer | 1790 - 1878 | GER | Mildred L. Traver |
| Baranowski | 1860 - 1920 | Poznan, POL, WI | Earl Komassa |
| Barber | 1700 - 1794 | ENG | Louis E. Perry |
| Bates | 1900 - Present | ENG, WI, IL | Ken Graham |
| Beard | 1650 - 1775 | ENG | Louis E. Perry |
| Beaumont | 1700 - Present | Huddersfield ENG, WI | Roy Fritz |
| Beck | 1836 - 1900 | OH | Jean Brisk |
| Bedus | 1800 - 1875 | Galicia, SPN | John Cieslewicz |
| Begauke | 1821 - 1878 | GER, MN | Roger Cobb |
| Beierle | 1850 - Present | WI | Al Koester |
| Bell | 1860 - 1981 | IA, WI, CA, HI | John Zwiebel |
| Bell | 1675 - 1751 | IRE, PA | Laurel Ingram |
| Bender | 1790 - 1875 | NY, WI | Guy Porth |
| Benedict | 1800 - Present | NY | Steve Arndt |
| Benton | 1780 - Present | NY, MI, MO | Fred Riley |
| Bentzler | 1804 - 1850 | GER, WI | Richard Bentzler |
| Berdelman | 1734 - Present | GER, IN, WI | Karyl F. Hahn |
| Bergstrom | 1868 - Present | SWED, WI | Susan Lind |
| Bernstein | 1800 - 1980 | POL, RUS, NY | Edwin Goldman |
| Betagh | 1650 - Present | IRE, MA, WI | Cindy Schofield |
| Bevsek | 1800 - Present | YUG, Austria, USA | Steve Gulgowski |
| Bielmann | 1761 - 1785 | GER | Karen Ann Johnson |
| Billam | 1700-1900 | PA, OH, IN | Annette Eliason |
| Bion | 1850 - 1870 | GER, WI | Frances Peg Mandery Hart |
| Bird | 1780 - 1860 | VA, WV, IN | Patricia Hewitt |
| Blanck | 1833 - 1880 | GER, WI | Barbara Eschenbauch |
| Blawat | 1796 - 1902 | Poland, WI | Deloris Cieslewicz |
| Blawat | 1800 - Present | POL, WI | Eileen Winger |
| Blievernicht | 1850 - Present | GER, WI | Jeanette Ragner |
| Bluem | 1850 - Present | WI | Ronald O. Worm |
| Bluemke | 1823 - 1895 | GER, WI | Howard Gennrich |
| Blum | 1731 - 1814 | Rheinpfalz, GER, NJ | Laurel Ingram |
| Bobinchak | 1840 - Present | Slovenia, NY, OH | Frances Ackermann |
| Boeker | 1800 - Present | WI | Ronald O. Worm |
| Boos | 1850 - Present | GER, WI | Jeanette Ragner |
| Booth | 1800 - Present | ENG, CAN, WI | Nancy Roloff |
| Borchers | 1812 - 1941 | GER, WI | Bev Good |
| Borkowski | 1850 - 1925 | POL, WI | Len Borkowski |
| Bose | 1830 - 1860 | GER, WI | Richard Bentzler |
| Bournique | 1600 - 1872 | Abreschviller, Moselle, FR | Maura Bournique |
| Bournique | 1872 - 1900 | Belgium | Maura Bournique |
| Bournique | 1880 - Present | IN, PA, OH | Maura Bournique |
| Boyle | 1863 - 1925 | WI | Leo Costello |
| Braden | 1700 - Present | IRE, WI | Jim Braden |
| Bradford | 1899 - Present | ENG, CAN, MI | Nancy Setlock |
| Brady | 1797 - 1880 | IRE, NY, WI, IL | Janice Burton |
| Branney | 1820 - Present | ENG, Co. Down IRE, CO | Roy Fritz |
| Braun | 1880 - Present | WI | Maureen Schulz |
| Breska | 1803 - 1850 | Poland | Deloris Cieslewicz |
| Breu | 1800 - 1900 | Nefair, GER | Al Koester |
| Briggs | 1750 - 1900 | ENG, WI | Roy Fritz |
| Brisach | 1810 - 1932 | Alsace, IL | Janice Burton |
| Brodersen | 1850 - Present | DEN, IA | Jan Pientok |
| Brooks | 1784 - Present | NJ, PA, OH, WI | John Gamerdinger |
| Brooks | 1810 - 1940 | ENG, MA, CT, WI | Russell R. Retzack |
| Brown | 1800 - 1830 | Palmyra, NY | Guy Porth |
| Brown | 1800 - 1900 | IRE, CAN, Rochester, NY | Joan Borman |
| Brown | 1797 - Present | NY, WI, DAK TERR | Karyl F. Hahn |
| Browne | 1817 - 1860 | PA, MS | Pauline Linoner |
| Brzezinski | 1862 - 1931 | Poland, PA, IN | John Cieslewicz |
| Brzoskowski | 1800 - Present | West Prussia, GER, USA | Steve Gulgowski |
| Buehler | 1756 - 1912 | GER, WI | Karen Ann Johnson |
| Bunnell | 1620 - 1890 | CT, New Brunswick | Betty Andrews Storey |
| Burgess | 1630 - 1895 | ENG, MA, RI, CT, NY, WI | Bob Heck |
| Burkley | 1650 - Present | GER, USA | Marge Wilmes |
| Burnham | 1620 - 1906 | ENG, Essex Co., MA | Betty Andrews Storey |
| Burns | 1800 - Present | IRE, NY | Steve Arndt |
| Burns | 1755 - Present | IRE | Tom Keyes |
| Burton | 1750 - 1926 | NC, KY, OH, IN, IL | Janice Burton |
| Bushanich | 1840 - Present | Slovenia | Frances Ackermann |
| Butcher | 1823 - 1847 | VA, OH, IN, WI | Frances Peg Mandery Hart |
| Butler | 1800 - 1920 | NY, MI | Carolyn M. Nelson |
| Cain | 1600 - Present | IRE, WI | Mary Swessel |
| Camery | 1791 - Present | VA, OH, IL, IA | Jan Pientok |
| Cappon | 1860 - 1980 | WI, KY, VA, IL | Wesley & Jane Hellen |
| Carlow | 1750 - 1900 | MA | Cindy Schofield |
| Carlson | 1842 - Present | SWE, WI | Judy Newman |
| Carr | 1850 - Present | IL | Ken Graham |
| Case | 1795 - 1973 | RI, MA, NY, WI, IA, NE, KS | Karyl F. Hahn |
| Case | 1795 - Present | MA, RI, NY, WI | Karyl F. Hahn |
| Casey | 1880 - Present | WI | Maureen Schulz |
| Chamberlain | 1873 - 1905 | MI, NY, WI | Karen Ann Johnson |
| Chambers | 1600 - Present | Co. Down, IRE | Barb Henzelmann |
| Chapman | 1822 - Present | ENG, WI | Jean Brisk |
| Charlton | 1729 - 1986 | MA, New Brunswick, MA | Betty Andrews Storey |
| Chase | 1700 - 1836 | MA, RI, NY, IL, WI | Bob Heck |
| Cieminski | 1800 - Present | POL, WI | Eileen Winger |
| Cierniak | 1825 - ???? | Poland | John Cieslewicz |
| Cieslewicz | 1825 - Present | Poland, IL, WI | John Cieslewicz |
| Clapp | 1840 - Present | GER, OH | Frances Ackermann |
| Claridge | 1815 - 1990 | ENG, WI | Wesley & Jane Hellen |
| Clark | 1500 - 1900 | ENG, RI, WI | Art Clark |
| Clem | 1755 - Present | ENG | Tom Keyes |
| Cline | 1780 - 1880 | VA, WV, IN | Patricia Hewitt |
| Cobb | 1600 - 1900 | ENG, MA | Cindy Schofield |
| Cobb | 1810 - 1873 | ME, IL, WI | Roger Cobb |
| Cole | 1907 - Present | MN, SD | Betty S. Spaar |
| Coleman | 1700 - Present | ENG, NY, WI | Howard & Jane Traeder |
| Connell | 1740 - 1791 | SCOT, NY | Jan LeTellier |
| Conrad | 1755 - Present | Altwiedelbach, GER | Tom Keyes |
| Cook | 1830 - 1960 | Prussia, WI | Peg O'Connell |
| Costello | 1807 - 1867 | IRE, MA, WI | Leo Costello |
| Covert | 1700 - 1786 | NETH, NY | Jan LeTellier |
| Coy(e) | 1766 - 1846 | CT, NH, MA, NY | Roger Cobb |
| Crandall | 1800 - Present | ENG, WI | Sharon G. Stolpa Worm |
| Crocker | 1850 - 1943 | MA, Nova Scotia, MA | Betty Andrews Storey |
| Cronk | 1850 - 1870 | VT, NH, WI | Guy Porth |
| Curdle | 1787 - Present | ENG, WI | Judy Newman |
| Cyborowski | 1700 - Present | POL, WI | Margaret Kurzynski |
| Daggett | 1600 - 1890 | ENG, MA | Cindy Schofield |
| Daleiden | 1837 - Present | Winfield, DuPage Co., IL | Jerry Daleiden |
| Daniel | 1849 - 1915 | POL, WI | Toni Daniels |
| Darmstadt | 1850 - 1900 | GER, WI | David Egldff |
| Davis | 1825 - 1890 | VT, NY, WI | Roger Cobb |
| de Serres/Seres | 1580 - 1722 | FR, NLD, ENG | EJ Brumder |
| Debus | 1830 - 1882 | GER, IL | Roger Cobb |
| Delaney | 1800 - Present | NY | Steve Arndt |
| Dellger | 1800 - 1882 | GER, WI | Leo Costello |
| DeLong | 1870 - Present | FRA, CAN, MI | Nancy Setlock |
| Dilley | 1800 - 1900 | KY, WI | James Muhlenhaupt |
| Dingman | 1850 - 1947 | WI | Ron Gruettner |
| Dolan | 1820 - 1962 | IRE, MI | Bev Good |
| Donald | 1650 - Present | SCOT, CAN, US | Margaret Kurzynski |
| Doncheck | 1800 - 1925 | WI | Al Koester |
| Donkersgoed | 1695 - Present | NLD, WI | Judy Newman |
| Dorothy | 1800 - 1900 | GER, WI | Al Koester |
| Dory / Dorey | 1750 - 1900 | ENG, NY | Nancy Roloff |
| Doucette | 1590 - Present | FRA, Quebec, MN, WI | James Gaboury |
| Douglass | 1800 - Present | NY, NJ | Anne Hazelwood |
| Draheim | 1822 - 1904 | Pomerania, WI | Beverly LaBelle |
| Droppers | 1830 - 1940 | HOL, WI | Wesley & Jane Hellen |
| Dublinski | 1820 - 1960 | POL, WI | Patricia Salske |
| Dukes | 1800 - Present | GER, WI | Sharon G. Stolpa Worm |
| Dunham | 1770 - 1810 | MA, ME | Barbara Bardeen Cobb |
| Dunlop | 1700 - Present | IRE, CAN | Margaret Kurzynski |
| Duren | 1850 - 1950 | WI | James Muhlenhaupt |
| Dutkiewicz | 1844 - 1914 | POL, WI | Toni Daniels |
| Dygert | 1800 - 1905 | NY, WI | Wesley & Jane Hellen |
| Eberhardt | 1820 - 1950 | GER, WI | Joslyn Zaffrann |
| Ebner | 1790 - 1900 | GER, WI | Karen Ann Johnson |
| Edel | 1858 - Present | POL, WI | Audrey Block |
| Edgar | 1826 - 1900 | Donegal, IRE, CAN, IRE | Patricia Hewitt |
| Edgeworth | 1884-1964 | IRE, UT, MT, CA, WI | Maureen & Bill Hilbert |
| Edwards | 1800 - 1850 | NY, WI | Guy Porth |
| Edwards | 1850 - Present | NB | Ken Graham |
| Edwards | 1750 - 1900 | VT, CT, NY, WI | Nancy Roloff |
| Egan | 1755 - Present | County Roscommon, IRE | Tom Keyes |
| Engelhardt | 1810 - 1946 | GER, WI | Ruth & Norman Schroeder |
| Erjavec | 1916 - Present | MN | Beverly Adamsky |
| Ertl | 1820 - 1948 | GER, WI | Joslyn Zaffrann |
| Evans | 1800 - 1850 | Wales | Louis E. Perry |
| Eyer | 1830 - 1950 | CAN, IN | Richard O'Connor |
| Falls | 1700 - Present | IRE, MD, CAN | Margaret Kurzynski |
| Fanning | 1810 - 1910 | NY, MI | Fred Riley |
| Farkas | 1840 - 1910 | Hungary, WI | Carolyn M. Nelson |
| Fehrenbach | 1873 - Present | MI, WI | Mary Swessel |
| Feld | 1840 - Present | GER, WI | Jeanette Ragner |
| Fenstemaker | ???? -1900 | OH | Jean Brisk |
| Feuling | 1800 - Present | GER, WI | Betty Andrews Storey |
| Fickau/Virchow | 1831 - 1881 | WI | Constance Stack |
| Filson | 1800 - 1900 | County Tyrone, IRE, PA | Jan Pientok |
| Fischer | 1835 - Present | MI, WI | Kathy Motz |
| Fisher | 1855 - 1936 | GER, WI | Leo Costello |
| Fix | 1810 - 1900 | GER, WI | Ron Gruettner |
| Flick | 1800 - Present | WI | Sharon G. Stolpa Worm |
| Folsom | 1898 - 1970 | WI, FL | Betty S. Spaar |
| Fors | 1870 - 1920 | SWE, SD | Douglas Foss |
| Forsyth | 1830 - Present | SCOT, CAN, OH, MI, WI | Susan Lind |
| Foss | 1860 - 1950 | SWE, SD | Douglas Foss |
| Foster | 1800 - 1860 | VA | Pauline Lindner |
| Foxwell | 1710 - Present | Cornwall ENG, WI | Roy Fritz |
| Fraser | 1650 - Present | SCOT | Margaret Kurzynski |
| Free | 1825 - 1855 | DC, CT, IL, WI | Richard Bentzler |
| Freeman | 1840 - 1945 | GER, MI, WI | Russell R. Retzack |
| Frei | 1800 - 1950 | Switzerland, IL, WI | Marion L. Getka |
| French | 1752 - 1860 | VT, NH | Guy Porth |
| French | 1700 - 1867 | MA, CT, NY | Jan LeTellier |
| Frey | 1800 - Present | GER, WI | Mary Ellen Timm |
| Fricke | 1744 - Present | GER, WI | Lois A. Marti |
| Friedmann | 1800 - 1900 | Baden, GER, Rochester, NY | Joan Borman |
| Fritz | 1700 - 1918 | GER, NY, CT | Lowell Alexander |
| Fritz | 1690 - Present | Weurt. GER, NB, CO, SD | Roy Fritz |
| Frost | 1820 - ???? | Poland | Deloris Cieslewicz |
| Fulder | 1900 - 1975 | MI, NY | Carolyn M. Nelson |
| Funk | 1800 - 1860 | NY | Louis E. Perry |
| Fusser | 1850 - 1860 | GER, Racine, WI | Charles Johnson |
| Gaboury | 1630 - Present | FRA, Quebec, MA, MN, WI | James Gaboury |
| Gainor | 1815 - 1932 | IRE, WI, MN | Bev Good |
| Galvin | 1840 - 1920 | NY City, NY | Maura Bournique |
| Gamerdinger | 1645 - Present | Wurtemburg, GER, CT, WI | John Gamerdinger |
| Ganswindt | 1800 - 1920 | GER, WI | Marion L. Getka |
| Garant | 1700 - Present | CAN, WI | Jim Braden |
| Garbe | 1800 - 1900 | GER, WI | Richard Garbe |
| Gargen | 1840 - Present | WI | Maura Bournique |
| Gates | 1800 - Present | WI | Sharon G. Stolpa Worm |
| Gatzke | 1867 - 1927 | Antigo, Milwaukee, WI | Constance Stack |
| Gauger | 1830 - 1870 | GER, WI, SD | Douglas Foss |
| Gauger | 1813 - 1950 | Prussia, WI, SD | Douglas Foss |
| Geib | 1782 - 1855 | Bavaria, GER, IL | Janice Burton |
| Geisinger | 1840 - 1970 | GER, WI | Wesley & Jane Hellen |
| Generke | 1829 - Present | GER, CAN, MI, WI | Susan Lind |
| Gengerke | 1829 - Present | GER, CAN, MI, WI | Susan Lind |
| Gengler | 1800 - Present | Esch-Sur-Sure, LUX | Jerry Daleiden |
| Genrich | 1800 - 1880 | GER | Howard Gennrich |
| Gentry | 1890 - Present | IL | Betty S. Spaar |
| Gerduordermark | 1790 - 1978 | GER, IN | Karyl F. Hahn |
| Gerondal | 1840 - Present | Belgium, WI | Mary Ellen Timm |
| Getka (Gadke) | 1800 - Present | Brand. GER, WI | Marion L. Getka |
| Gibson | 1700 - 1900 | Co. Armagh, IRE | Barb Henzelmann |
| Gill | 1700-1900 | PA | Annette Eliason |
| Gillies/Gillis | 1750 - 1833 | SCOT, NY | Jan LeTellier |
| Glamm | 1700 - Present | Pomerania, WI | Howard & Jane Traeder |
| Glander | 1814 - 1872 | GER, MN | Roger Cobb |
| Gleason | 1800 - Present | IRE, NY, WI | Steve Arndt |
| Glowacki | 1873 - 1960 | POL, WI | Toni Daniels |
| Gobler | 1800 - 1900 | GER, WI | Carolyn M. Nelson |
| Goddard | 1645 - 1952 | MA, New Brunswick, MA | Betty Andrews Storey |
| Goedecke | 1700 - Present | GER, USA | Marge Wilmes |
| Goerke | 1807 - Present | GER, WI | Ruth & Norman Schroeder |
| Goetz | 1796 - 1876 | GER, WI | Art Clark |
| Goetz | 1800 - 1920 | GER, WI | Art Clark |
| Goldman | 1800 - 1950 | Galgosz, CZ | Edwin Goldman |
| Goldsmith | 1675 - 1780 | ENG(?), Essex Co., MA | Betty Andrews Storey |
| Good | 1805 - Present | IRE, NJ, NY, WI, MN | Bev Good |
| Goold | 1755 - Present | ENG | Tom Keyes |
| Gorman | 1700 - 1800 | Co. Kerry, IRE | Maura Bournique |
| Gorny | 1836 - 1904 | Poland, WI | Deloris Cieslewicz |
| Graham | 1850 - Present | IL, NB, WI | Ken Graham |
| Granger | 1755 - Present | Bedfordshire, ENG | Tom Keyes |
| Greenwood | 1733 - ???? | Bellville, Mifflin, PA | Laurel Ingram |
| Gregory | 1834 - 1891 | GER, IL | Roger Cobb |
| Groh | 1840 - Present | WI | Maura Bournique |
| Groshek | 1865 - Present | POL, WI | Eileen Winger |
| Gruettner | 1850 - 1920 | GER, WI | Ron Gruettner |
| Guillam | 1700-1900 | PA, OH, IN | Annette Eliason |
| Gulgowski | 1800 - Present | West Prussia, GER, USA | Steve Gulgowski |
| Gulick | 1850 - 1860 | NOR, Dover, WI | Charles Johnson |
| Guthof | 1850 - 1915 | GER, WI | Bob Heck |
| Haagensen | 1850 - Present | DEN | Jan Pientok |
| Haasch | 1848 - 1943 | GER, WI | Kay Voss |
| Hagen/Hager | 1847 - 1857 | GER, WI | Frances Peg Mandery Hart |
| Hall | 1640 - 1750 | MA, ME | Barbara Bardeen Cobb |
| Hamann | 1824 - 1895 | GER, WI | Lois A. Marti |
| Hammerschmidt | 1848 - 1860 | NY, OH, WI | Guy Porth |
| Harms | 1800 - 1900 | GER, WI | Marion L. Getka |
| Hart | 1850 - 1950 | OH | Anne Hazelwood |
| Hart | 1879 - Present | POL, WI | Frances Peg Mandery Hart |
| Hart | 1830 - Present | IRE, CAN, NY, OH, WI | Joan Borman |
| Hart | 1570 - 1870 | ENG, CT | Lowell Alexander |
| Hartmann | 1868 - Present | Dodge Co., WI | Kathy Motz |
| Haslam | 1800 - 1911 | ENG, NY, IL | Janice Burton |
| Hassemer | 1600 - 1930 | GER, WI | Betty S. Spaar |
| Haubold | 1770 - 1880 | GER | Howard Gennrich |
| Haubrich | 1600 - Present | Daaden, GER, Kenosha, WI | Joan Borman |
| Hauser | 1816 - 1883 | Rubolstadt, GER, WI | Howard Gennrich |
| Havey | 1858 - 1935 | WI | Leo Costello |
| Hayden | 1750 - 1870 | MA, ME, WI | Barbara Bardeen Cobb |
| Hayden | 1794 - 1963 | PA, IN, WI, MN, CO | Karyl F. Hahn |
| Hayden | 1630 - Present | ENG, MA, NJ, PA, WI | Karyl F. Hahn |
| Hayes | 1815 - 1900 | VA, OH, WI | John Gamerdinger |
| Hazelwood | 1850 - Present | ENG, WI, CO, TX | Anne Hazelwood |
| Heck | 1790 - Present | GER, MN, WI | Bob Heck |
| Heimann | 1861 - 1912 | Posen, WI | Karen Ann Johnson |
| Heinek | 1765 - 1970 | GER, WI | Betty Andrews Storey |
| Heiss | 1868 - Present | GER, WI | Don Winger |
| Hellen | 1840 - Present | GER, WI, OK | Wesley & Jane Hellen |
| Hellriegel | 1866 - Present | GER, OH | Frances Ackermann |
| Hemmer | 1847 - Present | WI, IL, MI | Kathy Motz |
| Hengeveld | 1720 - Present | NLD, WI | Judy Newman |
| Henkes | 1800 - 1855 | GER, WI | Richard Bentzler |
| Henningfeld | 1650 - Present | GER, WI | Bob Heck |
| Henningfield | 1650 - Present | GER, WI | Bob Heck |
| Henzelmann | 1700 - Present | GER, WI | Barb Henzelmann |
| Herkowski | 1780 - Present | POL, WI | Eileen Winger |
| Herman | 1880 - Present | GER, NE, WI | Susan Lind |
| Herrmann | 1790 - 1883 | GER, WI | Betty Andrews Storey |
| Herson | 1700 - Present | Belgium, WI | Mary Ellen Timm |
| Hertel | 1700 - Present | GER, SO RUS, ND | Jim Braden |
| Hetzel | 1780 - 1910 | GER, WI | Nancy Roloff |
| Hewitt | 1834 - 1930 | Quebec, IRE | Patricia Hewitt |
| Heydrich | 1820 - Present | GER, WI | Lois A. Marti |
| Heyl | 1736 - 1788 | Gernany, NJ, PA | Laurel Ingram |
| Hicks | 1800 - 1920 | NY, MI | Fred Riley |
| Hilbert | 1885-Present | WI | Maureen & Bill Hilbert |
| Hile | 1764 - 1831 | Northumberland Co., PA | Laurel Ingram |
| Himman | 1700-1900 | PA, OR | Annette Eliason |
| Himmon | 1700-1900 | PA, OR | Annette Eliason |
| Hinchliff | 1800 - 1950 | ENG, NY, WI | Bev Good |
| Hinman | 1700-1900 | PA, OR | Annette Eliason |
| Hitzke | 1823 - Present | GER, WI | Ruth & Norman Schroeder |
| Hoeft | 1700 - 1860 | GER, WI | Howard & Jane Traeder |
| Hoehne | 1800 - 1950 | GER, WI | Betty Andrews Storey |
| Hoelscher | 1700 - Present | GER, MO | Marge Wilmes |
| Hoffman | 1890 - 1930 | WI, MN | Louis E. Perry |
| Hone/Hohn | 1852 - 1872 | GER, Oswego, NY | Charles Johnson |
| Hoogensen | 1850 - Present | DEN | Jan Pientok |
| Horvath | 1862 - 1913 | Austria, IL | Art Clark |
| Horvath | 1860 - 1920 | AUS/HUN, IL | Art Clark |
| Host/de Host | 1880 - 1890 | FRA, GER, WI | Charles Johnson |
| Howell | 1813 - 1919 | KY, IN, IL | Janice Burton |
| Howind | 1800 - Present | GER, MO | Marge Wilmes |
| Huber | 1870 - Present | Austria, GER, WI | James Gaboury |
| Huck | 1800 - 1960 | Baden, GER, Rochester, NY | Joan Borman |
| Huefner | 1808 - 1900 | GER, WI | Betty Andrews Storey |
| Huff | 1800 - Present | GER, PA, OH, MI | Fred Riley |
| Huneken | 1700 - Present | GER, USA | Marge Wilmes |
| Hunter | 1650 - Present | SCOT | Margaret Kurzynski |
| Husmann | 1710 - Present | GER, MN | Darlene Norman |
| Huston | 1730 - 1860 | IRE, ME | Barbara Bardeen Cobb |
| Huston | 1828 - 1920 | Quebec, IRE | Patricia Hewitt |
| Ingram | 1860 - Present | WA, OK?, WI | Laurel Ingram |
| Isham | 1650 - 1900 | MA | Cindy Schofield |
| Israelson | 1839 - Present | SWE, WI | Judy Newman |
| Jaeggin/Jaggi | 1700 - 1758 | Switzerland | Jan LeTellier |
| Jahnke | 1852 - 1900 | GER, WI | Kay Voss |
| James | 1850 - Present | Wales, WI | Anne Hazelwood |
| James | 1721 - 1764 | SC | Pauline Linoner |
| Janas | 1800 - Present | GER, USA | Steve Gulgowski |
| Janing | 1820 - Present | GER, WI | Lois A. Marti |
| Jazdzewski | 1770 - Present | POL, WI | Eileen Winger |
| Jeager | 1800 - Present | Faha, Saarland, GER | Jerry Daleiden |
| Jellison | 1740 - 1820 | ME | Barbara Bardeen Cobb |
| Jilek | 1838 - 1922 | Bohemia, MI, WI | Beverly LaBelle |
| Jobe/Job/Joab | 1815 - 1986 | Baden GER, NY, CT, RI | Peg O'Connell |
| Johnson | 1680 - 1800 | NH, ME | Barbara Bardeen Cobb |
| Johnson | 1800 - Present | SWE, MN | Darlene Norman |
| Johnson | 1881 - 1920 | NY, MI, WI | Karen Ann Johnson |
| Jordans | 1840 - Present | WI, IL | Kathy Motz |
| Jossart | 1600 - 1900 | Belgium | Barb Henzelmann |
| Jossliyor | 1800 - 1877 | NY, MI, IL, Waukesha, WI | Joan Borman |
| Jost | 1700-1900 | PA | Annette Eliason |
| Judon | 1830 - 1920 | PA, IN, IA, NB | Patricia Hewitt |
| Jung | 1800 - 1927 | GER, WI | Betty Andrews Storey |
| Jungen | 1852 - 1924 | WI | Ron Gruettner |
| Kaczmarek | 1850 - 1970 | POL, WI | Patricia Salske |
| Kaemmerer | 1800 - Present | GER, MN, WI | Marion L. Getka |
| Kalista | 1850 - 1990 | CR, WI | Len Borkowski |
| Kaminski | 1846 - Present | Poznan, POL, WI | Earl Komassa |
| Kansier | 1776 - Present | GER, WI | Lois A. Marti |
| Karnthaler | 1830 - 1950 | Austria, US | Robert C. Porath |
| Kaufman | 1863 - 1952 | WI | Leo Costello |
| Kaz | 1850 - 1930 | Siegen, GER, IL, WI | Joan Borman |
| Keefe | 1818-Present | IRE, KY, IL | Rita Keefe Rados |
| Keidrowski | 1800 - Present | POL, WI | Sharon G. Stolpa Worm |
| Keisker | 1750 - Present | GER, USA | Marge Wilmes |
| Keller | 1700 - Present | Bavaria, WI | Howard & Jane Traeder |
| Keohane | 1860 - 1920 | IRE | Art Clark |
| Kern | 1789 - 1931 | Bavaria, IL | Janice Burton |
| Kerr | 1600 - 1900 | Co. Armagh, IRE | Barb Henzelmann |
| Keyes | 1755 - Present | County Cork, IRE | Tom Keyes |
| Kielton | 1816 - Present | Austria, PA, IN | John Cieslewicz |
| Kienzle | 1817 - Present | Wurtemburg, GER | Jerry Daleiden |
| Kihm | 1840 - Present | WI | Kathy Motz |
| Kindt/Kind | 1775 - Present | GER, NY, WI | Ruth & Norman Schroeder |
| Kirbey | 1870 - 1900 | MI | Barb Henzelmann |
| Kirsenlohr | 1840 - Present | GER, WI | Nancy Roloff |
| Klasna | 1840 - 1950 | Austria, Bohemia, US | Robert C. Porath |
| Klawien | 1600 - Present | WI | Mary Swessel |
| Kleismet | 1800 - ???? | Poland | Deloris Cieslewicz |
| Kleppel | 1800 - 1950 | GER, IL, WI | Marion L. Getka |
| Kletzsch | 1850 - Present | GER, WI | Anne Hazelwood |
| Kleven | 1850 - 1860 | NOR, Dover, WI | Charles Johnson |
| Knoll | 1871 - 1942 | POL, WI | Toni Daniels |
| Koch | 1820 - 1880 | GER, IL | Robert C. Porath |
| Koester | 1870 - Present | SD, WI | Al Koester |
| Koester | 1600 - 1950 | GER, WI | Betty S. Spaar |
| Kolafa | 1860 - 1975 | CR, WI, CA | Len Borkowski |
| Komassa | 1846 - Present | Poznan, POL, WI | Earl Komassa |
| Komorowski | 1787 - 1950 | Poland, WI | Deloris Cieslewicz |
| Korsch | 1800 - Present | GER, WI | Steve Arndt |
| Koster | 1750 - 1900 | Schildberg, GER | Al Koester |
| Kowske | 1827 - 1985 | GER, WI | Joslyn Zaffrann |
| Kraft | 1830 - 1920 | GER, WI | Patricia Salske |
| Kraschinsky | 1800 - 1880 | Poznan | Edna Kraschinsky |
| Kraus | 1800 - 1855 | GER, WI | Richard Bentzler |
| Krause | 1830 - 1870 | GER, WI, SD | Douglas Foss |
| Krause | 1860 - 1940 | Prussia, WI, SD | Douglas Foss |
| Kreft | 1830 - 1920 | POL, WI | Patricia Salske |
| Krohn | 1800 - 1998 | WI | Al Koester |
| Krot | 1845 - Present | Bohemia | Frances Ackermann |
| Kruit | 1800 - 1900 | GER, WI | Richard Garbe |
| Kruth | 1800 - 1900 | GER, WI | Richard Garbe |
| Kubitz | 1831 - Present | Prussia, WI | Neal E. Raduenz, 456 E. Van Beck Ave., Milwaukee, WI, 53207-7710 |
| Kuntz | 1822 - 1869 | GER, WI | Jean Brisk |
| Kupersmith | 1900 - Present | USA | Edwin Goldman |
| Kurth | 1875 - Present | GER, WI | Mary Swessel |
| Kurzynski | 1700 - Present | POL, WI | Margaret Kurzynski |
| Kussman | 1839 - 1949 | Posen, IL, WI | Beverly LaBelle |
| LaBelle | 1834 - Present | Quebec, WI | Beverly LaBelle |
| Lagers | 1800 - Present | Belgium, WI | Mary Ellen Timm |
| Lamb | 1690 - 1780 | CT | Barbara Bardeen Cobb |
| Lammert | 1800 - Present | GER, WI | Mary Ellen Timm |
| Lane | 1762 - 1912 | MA, NY, WI, DAK TERR | Karyl F. Hahn |
| Lane | 1762 - Present | MA, NY, WI, SD, WI | Karyl F. Hahn |
| Lane | 1810 - 1880 | NC, MS | Pauline Linoner |
| Langenheder | 1729 - 1845 | Hannover | Janice Burton |
| Larson | 1865 - Present | SWED, WI | Susan Lind |
| Lartz | 1836 - 1931 | GER, WI | Jean Brisk |
| Lawless | 1820-1920 | IRE, WI | Maureen & Bill Hilbert |
| Lebel | 1665 - 1834 | Quebec | Beverly LaBelle |
| Lehman | 1825 - Present | Pomerania, WI | Beverly LaBelle |
| Lehmann | 1772 - 1935 | GER, IL | Mildred L. Traver |
| Lemke | 1848 - 1900 | GER, WI | Kay Voss |
| Lemke | 1848-1900 | GER, IL | Rita Keefe Rados |
| Lentz | 1868 - Present | GER | Don Winger |
| LeTellier | 1600 - 1770 | France, NY, PA, VA | Jan LeTellier |
| Leverenz | 1853 - 1911 | Prussia, WI | Constance Stack |
| Levisee | 1790 - Present | NY, IL, MN, WI | Bob Heck |
| Levy | 1860 - 1930 | POL, MI, WI | Anne Hazelwood |
| Lies | 1818 - Present | Haller, LUX | Jerry Daleiden |
| Linck/Link | 1708 - 1980 | GER, WI, NY | Kay Voss |
| Lindert | 1813 - 1960 | GER, WI | Kay Voss |
| Link | 1800 - 1870 | GER, WI | Betty Andrews Storey |
| Litner | 1869 - 1925 | WI | Ron Gruettner |
| Litza | 1879 - Present | POL, WI | Eileen Winger |
| Lohman/Lahman | 1758 - 1923 | GER, WI | Kay Voss |
| Long | 1852 - 1981 | NY, PA, WI | Bev Good |
| Loos | 1850 - Present | GER, WI | Jeanette Ragner |
| Lorbiecki | 1783 - Present | Poland, WI | Deloris Cieslewicz |
| Lough | 1803 - Present | IRE, RI | Peg O'Connell |
| Lubow | 1851 - 1927 | GER, WI | Lois A. Marti |
| Luecke | 1824 - Present | GER | Don Winger |
| Macarty | 1830 - 1953 | PA, KY, WI | Wesley & Jane Hellen |
| Macklin | 1837 - 1950 | IRE, NY, RI | Peg O'Connell |
| MacLeod | 1858 - Present | SCOT, CAN, MI | Nancy Setlock |
| Maertz | 1810 - Present | GER, WI | Ruth & Norman Schroeder |
| Mahan | 1800 - 1950 | IRE, IN | Richard O'Connor |
| Mallon | 1800 - Present | IRE, WI | Jim Braden |
| Malsi | 1850 - 1930 | MO, AL, CO, MS, CA | EJ Brumder |
| Mandery/Mandry | 1847 - 1866 | GER, MN | Frances Peg Mandery Hart |
| Martin | 1650 - Present | SCOT | Margaret Kurzynski |
| Martin-Serrano | 1598 - 1640 | Spain, NM | Lois A. Marti |
| Marx | 1880 - Present | WI | Maureen Schulz |
| Masch | 1775 - Present | GER, WI | Ruth & Norman Schroeder |
| Mason | 1700 - Present | MA, WI, IL | Ken Graham |
| Massman | 1800 - Present | GER, WI | Mary Ellen Timm |
| Mathway | 1650 - 1760 | ENG | Louis E. Perry |
| Matke | 1821 - 1889 | GER, WI | Howard Gennrich |
| Matteson | 1700 - 1836 | RI, CT, NY | Bob Heck |
| Matthews | 1650 - 1875 | MA | Cindy Schofield |
| Matthews | 1821-1897 | IRE, KY, IL | Rita Keefe Rados |
| Mattusch | 1850 - Present | GER, WI | Mary Swessel |
| Maute | 1806-1900 | GER | Rita Keefe Rados |
| May | 1850 - 1910 | GER, WI | Ron Gruettner |
| Mayer | 1850 - 1900 | FRA, WI | David Egldff |
| McCarth | 1600 - Present | Co. Kerry, IRE | Maura Bournique |
| McCarty | 1800 - 1900 | PA | Jan Pientok |
| McGowan | 1890 - Present | IN,IL, CA | Bev Good |
| McGuire | 1834 - 1948 | IRE, WI | Jean Brisk |
| McIntosh | 1705 - 1780 | SCOT, SC | Pauline Linoner |
| McLaughlin | 1800 - 1900 | WI, IL | Maureen Schulz |
| McLeod | 1858 - Present | SCOT, CAN, MI | Nancy Setlock |
| McNeill | 1650 - Present | Co. Armagh, IRE | Barb Henzelmann |
| McNulty | 1807 - 1895 | IRE, WI | Bob Heck |
| Mead | 1848 - 1890 | IRE, NY, WI | Guy Porth |
| Mecklenburg | 1844 - Present | GER, WI | Mary Swessel |
| Meidie | 1860 - 1920 | GER, WI | Carolyn M. Nelson |
| Melody | 1814 - 1879 | IRE, NY, WI | Bev Good |
| Messinger | 1850 - Present | CT, WI | Anne Hazelwood |
| Metz | 1800 - Present | USA | Steve Gulgowski |
| Michalski | 1836 - 1901 | Poland, WI | Deloris Cieslewicz |
| Miezio | 1700 - Present | POL, WI | Jim Braden |
| Migowski | 1820 - 1940 | Poland, WI | Deloris Cieslewicz |
| Mills | 1580 - 1918 | ENG, CT | Lowell Alexander |
| Milson | 1650 - 1700 | ENG | Louis E. Perry |
| Mohr | 1750 - 1877 | GER, WI | Betty Andrews Storey |
| Monahue | 1870 - Present | WI | Maureen Schulz |
| Moran/Morin | 1820 - 1870 | IRE, Lyons, WI | Charles Johnson |
| Morell | 1692 - 1834 | FRA, GER | Karyl F. Hahn |
| Morus | 1850 - Present | West Prussia, GER, USA | Steve Gulgowski |
| Mosiman | 1815 - 1901 | SWZ, WI, MO | Art Clark |
| Mosiman | 1815 - 1900 | SWZ, WI, MO | Art Clark |
| Moulton | 1890 - 1930 | IL, WI | Maureen Schulz |
| Mudway/Muthway | 1650 - 1700 | ENG | Louis E. Perry |
| Mueller | 1850 - 1904 | GER, WI | Kay Voss |
| Muhlenhaupt | 1800 - 1900 | WI, PA, IA, CO | James Muhlenhaupt |
| Mulac | 1845 - Present | Bohemia | Frances Ackermann |
| Murphy | 1835 - 1920 | MA, WI | Jean Brisk |
| Nawrocki | 1830 - 1952 | Poland, IL, WI | John Cieslewicz |
| Nelson | 1800 - Present | WI | Ken Graham |
| Neuman | 1850 - 1947 | IRE, WI | Ron Gruettner |
| Neurohr | 1810 - 1880 | GER | Mildred L. Traver |
| Newcomb | 1600 - 1900 | ENG, MA | Cindy Schofield |
| Newell | 1820 - 1920 | NY, MI | Carolyn M. Nelson |
| Newman | 1841 - Present | IRE, WI | Judy Newman |
| Niedermeier | 1803 - Present | GER, WI | Ruth & Norman Schroeder |
| Nielsen | 1890 - Present | DEN, IL, WI | Jeanette Ragner |
| Norman | 1800 - Present | OH, IA, MN | Darlene Norman |
| Novy | 1867 - Present | Bohemia, OH | Frances Ackermann |
| Nowicki | 1830 - 1920 | POL, WI | Patricia Salske |
| Nowicki | 1848 - 1930 | POL, WI | Toni Daniels |
| Obenhoff | 1850 - 1900 | MI | Anne Hazelwood |
| Ockroy | 1830 - 1975 | GER | Joslyn Zaffrann |
| O'Connell | 1803 - Present | IRE, NY, WI | Peg O'Connell |
| O'Connor | 1850 - 1920 | IRE, OH | Richard O'Connor |
| O'Hara | 1810 - 1900 | IRE, NY, WI | Barbara Bardeen Cobb |
| O'Hearn | 1850 - 2000 | IRE, WI | Len Borkowski |
| Oke | 1832 - 1909 | ENG, WI | Jean Brisk |
| O'Leary | 1897 - 1983 | IRE, IL, WI | Art Clark |
| O'Leary | 1850 - 1980 | IRE, WI, IL | Art Clark |
| Olislagers | 1800 - Present | Belgium, WI | Mary Ellen Timm |
| Olson | 1879 - Present | NOR, WI | Don Winger |
| O'Neill | 1840-Present | IRE, WI | Maureen & Bill Hilbert |
| O'Rourke | 1820 - 1920 | IRE, WI | Carolyn M. Nelson |
| Ostendorf | 1800 - 1940 | GER, OH | Richard O'Connor |
| O'Sullivan | 1884-Present | IRE, UT | Maureen & Bill Hilbert |
| O'Toole | 1800 - 1970 | IRE, NY | Howard Gennrich |
| Ott | 1815 - 1950 | OH, IN | Richard O'Connor |
| Otto | 1882 - 1930 | GER, WI | Barbara Eschenbauch |
| Ovans | 1820 - Present | ONT, CAN | Maura Bournique |
| Paetzhorn | 1820 - Present | GER | Robert C. Porath |
| Pagaet/Perry | 1830 - 1860 | NY | Louis E. Perry |
| Pagel | 1800 - Present | GER, WI | Marion L. Getka |
| Pantzke | 1700 - Present | Pomerania, WI | Howard & Jane Traeder |
| Parker | 1650 - 1890 | MA | Cindy Schofield |
| Parsons | 1800 - Present | ENG, NY, WI | Nancy Roloff |
| Patriers | 1864 - Present | GER | Don Winger |
| Patzig | 1714 - Present | GER, TX, OK, AZ | Karyl F. Hahn |
| Peacock | 1840 - 1850 | So. Wales, UK | Charles Johnson |
| Peckham | 1793-1798 | RI | Art Clark |
| Pederson | 1838 - Present | DEN, WI | Judy Newman |
| Peelen | 1855 - Present | Milwaukee, WI | Kathy Motz |
| Peplinski | 1860 - Present | POL, USA | Steve Gulgowski |
| Perkins | 1620 - 1780 | ENG, Essex Co., MA | Betty Andrews Storey |
| Perkins | 1775 - 1923 | PA, KY, OH, IN, IL | Janice Burton |
| Perry | 1800 - Present | IA, MO, MI | Steve Arndt |
| Philson | 1800 - 1900 | County Tyrone, IRE, PA | Jan Pientok |
| Pierce | 1762 - Present | VT, NY, WI | Judy Newman |
| Pike | 1818 - 1910 | MI, NY, OH | Carolyn M. Nelson |
| Pilger | 1800 - 1900 | GER | Edna Kraschinsky |
| Pillsbury | 1880 - Present | MA, MN | Betty S. Spaar |
| Pinger | 1848 - 1927 | GER, WI | Jean Brisk |
| Pinnell | ???? - 1772 | London, ENG, VA, WV | Laurel Ingram |
| Pionke | 1800 - Present | POL, WI | Nancy Roloff |
| Pitcher | 1799 - 1862 | NY | Roger Cobb |
| Pitzen | 1852 - 1860 | GER, Racine, WI | Charles Johnson |
| Pivar | 1800 - 1995 | POL, RUS, US | Edwin Goldman |
| Plocka | 1860 - 1920 | Poznan, POL, WI | Earl Komassa |
| Ploenzke | 1841 - Present | Pomerania, WI | Beverly LaBelle |
| Pokratz | 1810-1850 | GER | Rita Keefe Rados |
| Polak | 1850 - 1960 | GER, WI | Patricia Salske |
| Polczynski | 1817 - 1930 | Poland, IL, WI | John Cieslewicz |
| Polus | 1788 - 1860 | Gniezno, Poland, WI | John Cieslewicz |
| Porath | 1820 - Present | GER, WI | Robert C. Porath |
| Port | 1780 - 1843 | GER | Edna Kraschinsky |
| Porth | 1848 - 1854 | NY, OH | Guy Porth |
| Potapowicz | 1700 - Present | POL, WI | Jim Braden |
| Pouros | 1800 - Present | Greece, USA | Steve Gulgowski |
| Preddy | 1650 - 1704 | ENG | Louis E. Perry |
| Preibe | 1750 - Present | Pomerania, WI | Marion L. Getka |
| Price | 1774 - 1801 | NJ, PA | Laurel Ingram |
| Pridgen | 1787 - 1863 | NC, MS | Pauline Linoner |
| Priegel | 1880 - Present | GER, WI | Steve Arndt |
| Prisk (Brisk) | 1805 - Present | ENG, WI | Jean Brisk |
| Raatz | 1680 - 1958 | Pomerania, WI | Beverly LaBelle |
| Rabold | 1800 - Present | GER, USA | Marge Wilmes |
| Rach | 1886 - Present | Prussia, WI | Don Winger |
| Radtke | 1864 - Present | GER, WI | Don Winger |
| Raduenz/Radhnz | 1826 - Present | Purssia, WI | Neal E. Raduenz, 456 E. Van Beck Ave., Milwaukee, WI, 53207-7710 |
| Radzinski | 1856 - Present | POL, WI | Audrey Block |
| Ramey | 1700 - Present | VA, OH, NE | Roy Fritz |
| Ratzenstein | 1800 - 1910 | Budapest, HUN | Edwin Goldman |
| Rau | 1860 - 1960 | GER, WI | Kay Voss |
| Raube | 1849 - 1922 | GER, WI, TX | Constance Stack |
| Rebstock | 1600 - 1860 | Wurtemburg, GER, CT | John Gamerdinger |
| Redding/Reading | 1700 - Present | ENG, NY, WI | Howard & Jane Traeder |
| Regrut | 1840 - Present | Slovenia | Frances Ackermann |
| Rehfus | 1803-1903 | GER, IL | Rita Keefe Rados |
| Rehill | 1840 - 1930 | IRE, Askeaton, WI | Joan Borman |
| Reichenbach | 1850 - Present | WI | Sharon G. Stolpa Worm |
| Reinel | 1700 - Present | Bavaria, WI | Howard & Jane Traeder |
| Reit | 1730 - Present | NLD, IA, WI | Darlene Norman |
| Retzack | 1820 - 1943 | Prussia, GER, WI | Russell R. Retzack |
| Reuter | 1770 - 1880 | Erfurt, GER | Howard Gennrich |
| Reynolds | 1885 - 1920 | Racine Co., WI | Richard Bentzler |
| Rezik | 1839 - 1914 | WI | Ron Gruettner |
| Richard | 1837 - 1903 | Quebec, NY, WI | Beverly LaBelle |
| Riley | 1810 - Present | IRE, NY, MI, WI | Fred Riley |
| Risem | 1830 - Present | NOR, WI, MN | Bev Good |
| Ritter | 1852 - 1893 | GER, IL | Art Clark |
| Ritter | 1850 - 1970 | GER, IL, IA | Art Clark |
| Robbins | 1860 - 1900 | MI, NY | Carolyn M. Nelson |
| Rogaczewski | 1819 - 1948 | Poland, WI | Deloris Cieslewicz |
| Rogan | 1905-Present | Austria, WI, MI, WI | Maureen & Bill Hilbert |
| Rogers | 1750 - 1800 | ME | Barbara Bardeen Cobb |
| Rolbiecki | 1783 - Present | Poland, WI | Deloris Cieslewicz |
| Rolbiecki | 1800 - Present | POL, WI | Eileen Winger |
| Romlewski | 1800 - Present | POL, WI | Eileen Winger |
| Ronsholt | 1600 - Present | DEN, Racine, WI | Charles Johnson |
| Rooney | 1820 - 1962 | IRE, MI | Bev Good |
| Roos | 1800 - 1900 | Alsace, IN | Richard O'Connor |
| Rose | 1800 - 1900 | Alsace, IN | Richard O'Connor |
| Rosenau | 1857 - 1900 | Posen, WI | Karen Ann Johnson |
| Rosenow | 1827 - 1879 | Msc, Mec, GER, NY, WI | John Gamerdinger |
| Ross | 1800 - 1920 | SCT, MI, WI | Nancy Roloff |
| Roza | 1856 - 1912 | POL, WI | Toni Daniels |
| Rozewicz | 1815 - 1899 | Poland | John Cieslewicz |
| Ruddy | 1820 - Present | WI, CAN, IRE | Maureen Schulz |
| Rugg | 1780 - 1900 | NY, MI | Fred Riley |
| Runte | 1800 - Present | GER, USA | Steve Gulgowski |
| Rutherford | 1780 - 1850 | SCOT, ENG | Lowell Alexander |
| Sage | 1600 - 1870 | ENG, CT | Lowell Alexander |
| Sanborn | 1855 - Present | WI | Mary Swessel |
| Savage | 1860 - 1900 | MI | Barb Henzelmann |
| Sawyer | 1798 - Present | CT, NY, WI | Karyl F. Hahn |
| Schaetzel | 1850 - Present | GER, WI | Jeanette Ragner |
| Schaetzke | 1854 - Present | GER, WI | Lois A. Marti |
| Schaffner | 1800 - Present | IA, NB, CA | Ken Graham |
| Scharinger | 1755 - Present | Wuctemberg, Austria | Tom Keyes |
| Schatzmann | 1826 - 1960 | GER, WI | Joslyn Zaffrann |
| Schaus | 1800 - 1900 | WI, NY | James Muhlenhaupt |
| Schdff / Shdff | 1752 - 1870 | MA, NH, VT | Guy Porth |
| Schindelholz | 1860 - 1934 | Bohemia, CO | Roy Fritz |
| Schlaich | 1804-1897 | GER | Rita Keefe Rados |
| Schleawe | 1800 - 1900 | GER, WI | Betty Andrews Storey |
| Schlink | 1800 - 1900 | Bavaria, IN | Richard O'Connor |
| Schmidt | 1870 - Present | Austria, GER, WI | James Gaboury |
| Schneider | 1827 - 1922 | Msc, Mec, GER, NY, WI | John Gamerdinger |
| Schneider | 1838 - Present | GER, MI, WI | Susan Lind |
| Schoenecker | 1850 - 1900 | BOH, AUS, WI | Karen Ann Johnson |
| Schreihart | 1800 - Present | Austria, WI | Lois A. Marti |
| Schremba | 1845 - Present | GER | Frances Ackermann |
| Schroeder | 1818 - Present | GER, WI | Ruth & Norman Schroeder |
| Schrubbe | 1800 - 1905 | GER, WI | Ruth & Norman Schroeder |
| Schulka | 1850 - Present | WI | Ronald O. Worm |
| Schulz | 1825 - 1930 | GER, WI | Joslyn Zaffrann |
| Schumacher | 1847 - 1879 | GER, WI | Frances Peg Mandery Hart |
| Schwartz | 1800 - 1910 | Budapest, HUN | Edwin Goldman |
| Schweitzer | 1600 - Present | GER, WI | Mary Swessel |
| Scory | 1700 - 1870 | Belgium | Barb Henzelmann |
| Scott | 1800 - 1920 | CAN, MI | Fred Riley |
| Scott | 1820 - Present | IRE, MA, WI | Nancy Roloff |
| Seibert | 1770 - 1880 | GER, WI | Howard Gennrich |
| Seidler | 1830 - 1850 | GER, WI | Richard Bentzler |
| Sengbusch | 1800 - 1855 | GER, WI | Richard Bentzler |
| Serrell | 1588 - 1722 | ENG | EJ Brumder |
| Severin | 1849 - Present | GER, NY, WI | Richard Severin |
| Shea | 1840 - 1920 | NY City, NY | Maura Bournique |
| Shinners | 1820-1893 | IRE, NY, KY, FL | Rita Keefe Rados |
| Siegerson | 1690 - 1960 | ICE, WI | Joan Borman |
| Siemstorf | 1750 - 1900 | GER | Al Koester |
| Skull | 1916 - Present | MN | Beverly Adamsky |
| Slate | 1900 - Present | USA | Edwin Goldman |
| Slotnik | 1800 - 1900 | RUS, POL | Edwin Goldman |
| Smith | 1600 - 1740 | MA, CT | Barbara Bardeen Cobb |
| Smucinski | 1858 - 1906 | POL, WI | Toni Daniels |
| Snyder/Schneider | 1850 - Present | GER, WI | Anne Hazelwood |
| Snyder/Schneider | 1814 - Present | NY, WI | Mildred L. Traver |
| Socha | 1830 - 1920 | POL, WI | Patricia Salske |
| Soergel | 1859 - 1920 | WI | Ron Gruettner |
| Soike (Soyke) | 1820-1904 | GER, IL | Rita Keefe Rados |
| Sorenson | 1834 - Present | DEN, WI | Judy Newman |
| Spangler | 1750 - 1824 | GER, PA, OH | Jan LeTellier |
| Spicer | 1850 - 1950 | SD | James Muhlenhaupt |
| St. George | 1850 - Present | CAN, WI | Ronald O. Worm |
| Stach | 1879 - 1919 | Lyutomersk, RUS, WI | Constance Stack |
| Stahl | 1800 - Present | WI | Sharon G. Stolpa Worm |
| Stanclift/Stancliftf | 1764 - 1843 | SCOT, ENG, NY | Jan LeTellier |
| Starosta | 1600 - Present | Poznan, WI, MA | Mary Swessel |
| Steil | 1825 - 1920 | GER | Joslyn Zaffrann |
| Stender | 1847 - 1929 | GER, IL | Janice Burton |
| Stenzel | 1700 - Present | GER, WI | Jim Braden |
| Stephan | 1825 - 1874 | GER | Ruth & Norman Schroeder |
| Stieve | 1880 - 1920 | GER, WI | Carolyn M. Nelson |
| Stoll | 1794 - 1819 | GER | Karen Ann Johnson |
| Stolpa | 1800 - Present | POL, WI | Sharon G. Stolpa Worm |
| Stone | 1771 - 1960 | NY, MI, IL, Waukesha, WI | Joan Borman |
| Story | 1647 - 1865 | ENG, Essex Co., MA | Betty Andrews Storey |
| Stransky | 1844 - 1920 | GER, WI | Peg O'Connell |
| Stratman | 1845 - 1912 | GER, WI | Bob Heck |
| Strittmatter | 1790 - 1819 | GER | Karen Ann Johnson |
| Strobel | 1700 - Present | Bavaria, WI | Howard & Jane Traeder |
| Stuart | 1800 - Present | NV, IA, MO, MI | Steve Arndt |
| Sucharski | 1878 - 1966 | POL, WI | Toni Daniels |
| Suhr | 1858 - 1923 | GER, WI | Art Clark |
| Suhr | 1850 - 1950 | GER, MI, WI | Art Clark |
| Sulzbacher | 1755 - Present | Horn, GER | Tom Keyes |
| Sweet | 1750 - Present | NY, CAN, WI | Mary Ellen Timm |
| Swessel | 1600 - Present | GER, WI | Mary Swessel |
| Swierkowski | 1880 - Present | POL, WI | Susan Lind |
| Sztyma | 1840 - 1905 | POL, WI | Toni Daniels |
| Szymczak | 1879 - Present | POL, WI | Frances Peg Mandery Hart |
| Teclaw | 1883 - Present | POL, NY, WI | Richard Severin |
| Telyea | 1820 - 1950 | OH, WI | Wesley & Jane Hellen |
| Temple | 1652 - Present | ENG, Middlesex Co., MA | Betty Andrews Storey |
| Tetzlaff | 1883 - Present | POL, NY, WI | Richard Severin |
| Tews | 1800 - Present | GER, WI | Marion L. Getka |
| Tezlove | 1883 - Present | POL, NY, WI | Richard Severin |
| Thackery | 1807 - 1890 | NY, WI | Art Clark |
| Thayer | 1800 - 1910 | ENG, WI, NY, PA | James Muhlenhaupt |
| Theisen | 1800 - Present | GER, WI | Ronald O. Worm |
| Thiede | 1850 - 1950 | WI | James Muhlenhaupt |
| Thomas | 1878 - 1890 | CAN, CO | Roy Fritz |
| Thomas | 1825 - 1900 | KY, WI | Wesley & Jane Hellen |
| Thompson | 1873 - Present | NB, CA | Mildred L. Traver |
| Thummel | 1790 - Present | Jever GER, IL, NE | Roy Fritz |
| Tice | 1781 - 1911 | NJ, MI, WI | Leo Costello |
| Timm | 1800 - Present | GER, WI | Mary Ellen Timm |
| Toeber | 1600 - 1892 | GER, WI | Betty S. Spaar |
| Toerber | 1800 - 1900 | GER | Al Koester |
| Toole | 1800 - 1970 | IRE, NY | Howard Gennrich |
| Toomey | 1821-1890 | IRE, KY | Rita Keefe Rados |
| Torber | 1800 - 1900 | Gadebusch, GER | Al Koester |
| Traeder | 1700 - Present | Pomerania, Baltimore, WI | Howard & Jane Traeder |
| Tucker | 1650 - Present | MA | Cindy Schofield |
| Turecek | 1870 - 1920 | CR, WI | Len Borkowski |
| Turner | 1740 - Present | NY, WI | Nancy Roloff |
| Uhl | 1600 - 1930 | GER, WI | Betty S. Spaar |
| Uttke | 1800 - Present | GER, WI | Sharon G. Stolpa Worm |
| Van Houten | 1807 - 1980 | HOL, WI, ND | Wesley & Jane Hellen |
| Vanderheyden | 1800 - Present | WI | Ken Graham |
| Vatter | 1800 - 1880 | GER | Howard Gennrich |
| Vespalec | 1850 - 1980 | CZE, WI | Len Borkowski |
| Vinger | 1904 - Present | NOR, WI, ND | Don Winger |
| Vinz | 1700 - Present | Prussia, WI | Howard & Jane Traeder |
| Voigt | 1850 - Present | GER, WI | Jeanette Ragner |
| Vollbrecht | 1750 - 1900 | Pomerania, WI | Marion L. Getka |
| Voss | 1804 - 1900 | GER, WI | Kay Voss |
| Wagner | 1848 - 1940 | Bohemia, WI | Beverly LaBelle |
| Wahlschlaeger | 1830 - 1870 | GER, WI, SD | Douglas Foss |
| Wallace | 1900 - Present | WA | Laurel Ingram |
| Wallschlarger | 1830 - 1870 | GER, WI, SD | Douglas Foss |
| Warner | 1850 - 1880 | WI | Frances Peg Mandery Hart |
| Wasmer | 1840 - 1855 | GER, Oswego, NY | Charles Johnson |
| Watter | 1800 - 1880 | GER | Howard Gennrich |
| Wegmann | 1847 - 1870 | GER, MN | Frances Peg Mandery Hart |
| Wehrmeier | 1750 - Present | GER, USA | Marge Wilmes |
| Weis | 1720 - 1854 | GER, IL | Mildred L. Traver |
| Welch | 1800 - 1900 | GER, OH, MI | Fred Riley |
| Wenscherski | 1850 - 1950 | POL, WI, IL | Len Borkowski |
| Wesolowski | 1830 - 1920 | POL, WI | Patricia Salske |
| Westfal | 1850 - 1925 | POL, WI | Len Borkowski |
| Wetheral | 1600 - Present | Co. Armagh, IRE | Barb Henzelmann |
| Wheaton | 1795 - 1863 | VT, NY, OH, IL | Roger Cobb |
| Wheaton | 1834 - 1895 | NY, OH, IL, WI | Roger Cobb |
| White | 1830 - 1900 | Brooklyn, NJ | Anne Hazelwood |
| Whitlock | 1700 - 1800 | ENG, VA | Jan LeTellier |
| Wichlacz | 1881 - Present | GER, NE, WI | Susan Lind |
| Wiegand | 1817 - Present | GER, WI | Lois A. Marti |
| Wikkerink | 1717 - Present | NLD, WI | Judy Newman |
| Willgrubs | 1815 - Present | GER, WI | John Gamerdinger |
| Williams | 1825 - Present | NY, VA, OH, IL, IA | Jan Pientok |
| Williamson | 1825 - 1890 | NY, WI | Art Clark |
| Williamson | 1800 - 1880 | ENG, NY, WI | Art Clark |
| Wilmes | 1800 - Present | GER, USA | Marge Wilmes |
| Wilson | 1700 - Present | IRE, IL | Ken Graham |
| Wipplinger | 1835 - 1937 | GER, WI | Joslyn Zaffrann |
| Wobeck | 1839 - Present | GER | Don Winger |
| Wohlust | 1823 - Present | Prussia, WI | Neal E. Raduenz, 456 E. Van Beck Ave., Milwaukee, WI, 53207-7710 |
| Woods | 1670 - Present | Enniskillen IRE, IL, NE | Roy Fritz |
| Woodward | 1853 - Present | WI | Mary Swessel |
| Worm | 1850 - Present | WI | Ronald O. Worm |
| Worzala | 1870 - 1990 | POL, WI | Len Borkowski |
| Worzalla | 1800 - Present | POL, WI | Eileen Winger |
| Wrocklage | 1789 - 1887 | GER, OH | Richard O'Connor |
| Wursten/Wuersten | 1737 - 1926 | GER, IN | Karyl F. Hahn |
| Yost | 1700-1900 | PA, OH, IN | Annette Eliason |
| Zaborski | 1879 - 1935 | Chortkow-Galacia, WI | Toni Daniels |
| Zachel/Zochol | 1831 - 1916 | WI | Constance Stack |
| Zaffrann | 1825 - Present | GER, WI | Joslyn Zaffrann |
| Zeigenhagen | 1857 - 1939 | GER, WI | Ron Gruettner |
| Ziemann | 1820 - 1910 | GER | Robert C. Porath |
| Ziemstoerp | 1600 - 1850 | GER | Betty S. Spaar |
| Zimmermann | 1842 - Present | GER, WI, OH | Don Winger |
| Zinda | 1800 - Present | POL, WI | Eileen Winger |
| Zorn | 1850 - Present | GER, WI | Jeanette Ragner |
| Zuba / Cuba | 1850 - 1945 | POL, WI | Len Borkowski |
| Zuelsdorf | 1800 - 1892 | GER, WI | Kay Voss |
| Zwiebel | 1862 - Present | IA, WI, CA | John Zwiebel |
| ZZZ 790 Names | 3/11/2004 | Date Last Updated | by Bob Heck |