| Name | Birth date | Relationship with Floyd Williams |
|---|
| | | Husband of the 15th cousin 23 times removed |
| | | Husband of the 16th cousin 22 times removed |
| Fjolnarsson, Vana | Abt. 281 | 60th great-grandmother |
| Fjolnir Yngvi-Freysson | Abt. 256 | 61st great-grandfather |
| Flambert, Jane | WFT Est. 1275-1334 | 20th great-grandmother |
| Foinn, Prince Of Ireland | WFT Est. Bef. 100 | 69th great-grandfather |
| | | 6th cousin 67 times removed |
| Foster, Elizabeth | 1665 | 7th great-grandmother |
| | | Wife of the half 23rd cousin 9 times removed |
| Foster, Mary | Abt. 1701 | 6th great-grandmother |
| Frame, Nancy Allen | WFT Est. 1788-1808 | Wife of the 3rd great-granduncle |
| Frame, Samuel | WFT Est. 1740-1772 | Husband of the 4th great-grandaunt |
| Frame, Susan Ann | WFT Est. 1818-1838 | Wife of the 2nd great-granduncle |
| Francus | WFT Est. Bef. 100 | 68th great-grandfather |
| Frederick Lewis, Prince Of Wales | 1707 | 15th cousin 9 times removed |
| | | Half 23rd cousin 9 times removed |
| Frederick V King Of Bohemia | 1596 | Husband of the 11th cousin 13 times removed |
| | | Husband of the half 19th cousin 13 times removed |
| | | Husband of the 22nd cousin 13 times removed |
| | | Husband of the 23rd cousin 14 times removed |
| Freeman, Hubert DeWitt | 1900 | 3rd cousin once removed |
| Freeman, Joseph Craig | 1868 | Husband of the 2nd cousin twice removed |
| Freeman, Merlin | Private | 3rd cousin once removed |
| Fridleif Frodasson | Abt. 303 | 57th great-grandfather |
| Fridleif Frodasson | Abt. 456 | 50th great-grandfather |
| Fridleif Skjoldsson | Abt. 259 | 59th great-grandfather |
| Friuli, Eberhard | 816 | 35th great-grandfather |
| Frode, VII | WFT Est. 465-516 | 46th great-grandfather |
| Frodi Dansson | Abt. 433 | 51st great-grandfather |
| Frodi Fridleifsson | Abt. 281 | 58th great-grandfather |
| Frodi Fridleifsson | Abt. 479 | 49th great-grandfather |
| Frodi Havarsson | Abt. 347 | 55th great-grandfather |
| Frosti | WFT Est. 377-406 | 54th great-grandfather |
| Frotho King Of Denmark | WFT Est. 758-797 | 37th great-grandfather |
| Fulbert | WFT Est. 955-982 | 31st great-grandfather |
| Gaillchadh | WFT Est. Bef. 100 | 87th great-grandfather |
| | | 91st great-grandfather |
| Gaiseric | 400 | 49th great-grandfather |
| Gammel, Gorm Del, King Of Denmark | WFT Est. 860-889 | 34th great-grandfather |
| | | 2nd cousin 35 times removed |
| | | 2nd cousin 36 times removed |
| Gaunt, John Of | 1340 | 2nd cousin 22 times removed |
| | | Half 10th cousin 22 times removed |
| | | 13th cousin 22 times removed |
| | | 14th cousin 23 times removed |
| | | 15th cousin 21 times removed |
| | | 16th cousin 21 times removed |
| | | 15th cousin 23 times removed |
| | | 16th cousin 22 times removed |
| Gauthild Algautsdatter | Abt. 664 | 42nd great-grandmother |