| Surnames | Time Period | Researcher |
| Eads | 1875 - now | Liz Eads |
| Earhart | 1860 - now | Marsha R. Faulkner |
| Eaton | 1890 - 1920 | Deb Shillo |
| Eaton | 1865 - 1880 | Susan Eaton |
| Eberstein | 1850 - now | Kaye Mushalik |
| Eckel/Eckels | 1910 - 1945 | Jaculin U. Eckel |
| Eder | 1870 - 1970 | Patricia Miller Rains |
| Eifert | 1900 - 1980 | Charles Eifert |
| Eilar | c1928 | Mary Gilmore |
| Elberson | 1900 - 1950 | Ann Panlener |
| Ellis | 1849 - 1910 | N. Boland |
| Elmund | 1870 - 1880 | Keith Elmund |
| Emmerich | 1900 - now | Paul Emmerich |
| Ensworth | 1906 - now | Jacki |
| Ervin | 1930 | Mary Algren-Kennedy |
| Erwin | 1900 - ? | Serena Steventon |
| Eungard | 1900 - 1910 | Bobby Dobbins Title |
| Evans | c1860 - c1930 | S. Viehweg |
| Evans | 1960 - 1999 | Aaron Baker |
| Ewertz | 1870s - 1900 | Michael Hamersky |
| Ewing | 1880 - 1910 | James Ewing |
| Ewing | 1890 - 1910 | Darlene (Ewing) Brown |
| Fair | 1900 - now | Bonnie McDermid |
| Farmer | 1830 - now | Patty Napier |
| Fawbush | . | Tracy Fawbush |
| Fender | 1910 | Carmel |
| Feringa | 1918 - now | Barbara Tallett |
| Fielding | ? - now | Barbara R. Basa |
| Finsley | 1915 - 1920 | Barbara Chisler |
| Fisher | . | Sandi Carstensen |
| Fisher | 1910 | Connie Ritchie |
| Fitch | 1891 - ? | Judy M. Sixkiller |
| Fleming | 1910 - now | Harold Gosnell |
| Fletcher | before 1915 | Barbara Rich |
| Flores | 1870 - 1950 | Deb Shillo |
| Flowers | 1910 - now | Larry D. Flowers |
| Flowers | 1890 - now | Leroy Gailey |
| Foley | 1872 - 1880 | Virginia |
| Forbes | 1880 - 1930 | Mary Porter |
| Forward | 1850 - 1900 | Darla C. Clark Kyntych |
| Fosbrink | . | Richard Kajma |
| Foster | 1941 - 1942 | Hope Brush |
| Foster | 1883 - 1910 | Mike Foster |
| Foushee | 1870 - 1950 | Deb Shillo |
| Fowler | 1890 - 1910 | Steve Hullibarger |
| Fraley | 1945 - now | Chris Fraley |
| Franklin | 1945 - 1950 | Leland Franklin |
| Frederick | 1900 - 1960 | Robert Frederick |
| Freeman | 1880 - now | Serena Steventon |
| Friedel/Friedle | 1960 - 1980 | Charles Stratton |
| Friend | 1928 - now | Pat Muncy |
| Fuller | ? | Cheryl Herrera |
| Furstenburg | 1884 - 1947 | Kathy Heinz |
| Gabel | 1910 - now | Sue Lies |
| Gader | 1880 - 1930 | Mike Teter |
| Gaesser | 1929 - now | Shirley B. Gaesser |
| Galeener | 1880 - 1905 | Laverne Galeener-Moore |
| Galloup | . | Jan Crouser |
| Gann | 1940 - 1980 | Jo Ann Peterson |
| Gardner | 1897 | Dr. Lucha Koomjian |
| Garnett | 1879 - now | Cathy Smith |
| Garrett | 1800 - now | Craig Cook |
| Garrett | 1891 - now | Allen W. Davis |
| Garten | 1874 - c1930 | S. Viehweg |
| Gehlen | . | Eileen Gehlen |
| Genoway(s) | 1800 - now | Sue Robinson |
| Giffin | 1870 - now | Mark Kulow |
| Giles | 1860 - now | Gail J. Crum Henderson-Wishnefsky |
| Gilleland/Gilliland | 1865 - now | Wayne Gilleland |
| Gillenwater(s) | . | Jeannie Shires |
| Gillespie | 1900 - 1990 | Donna Yates |
| Gilliard | 1910 - 1936 | Rene Worland |
| Gillon | 1925 - 1951 | LaRae Rahm |
| Gilson | 1876 - 1900 | Brice Alexander Gilson |
| Gilstrap | . | Neil Guggenmos |
| Glass | 1880 - 1930's | Courtney |
| Glenn | 1941 - 1950 | Dean Glenn |
| Glenn | 1885 - ? | Beverly A. Lacey |
| Glenn | 1883 - 1910 | Danny Carruthers |
| Godwin | . | Marie Godwin LaDuron |
| Goff | 1900 - 1929 | VM Goff |
| Gonzalez | 1940 - now | Cheryl Doleshal |
| Gooding | 1800 - now | Sue Robinson |
| Gorges | aft 1880 - 1917 | Anisah Haynes |
| Gorham/Gorum | 1880 - 1947 | Amy Ferdinand |
| Gorsuch | 1895 - 1925 | Georjeana |
| Gosch | 1880 - 1940 | Phyllis Solter |
| Gossett | 1891 - 1961 | Stephen M. Andrews |
| Graham | 1879 - Now | Mike Graham |
| Grassl | 1875 - | Sharon Pausig |
| Gray | 1880 | Charlene Gray Hickerson |
| Gregory | 1847 - 1900 | Dori Stewart |
| Griner | . | Priscilla Pollman |
| Grinstead | 1920 - now | Gidge |
| Grisham | 1930 - 1942 | Marilyn Swanson |
| Groessl | 1872 - | Sharon Pausig |
| Groff | 1920 - 1923 | Barbara Petty |
| Grotz | 1920 - 1945 | Richard Hitchcock |
| Guldner | 1850 - now | C.J. Guldner |
| Gurnee | 1920's | V. Calvin |
| Guy | 1880 - 1888 | Deleana Adams |