| Name | Birth date | Relationship with Floyd Williams |
| Rognvald Olafsson | Abt. 790 | 37th great-grandfather |
| Rognvald, Earl Of More | Abt. 830 | 35th great-grandfather |
| Rognvaldsson, Aseda, Of Jutland | Abt. 812 | 36th great-grandmother |
| Rolf Nefja | Abt. 818 | 36th great-grandfather |
| Rollon Duke Of Normandy | 870 | 34th great-grandfather |
| Romaich | WFT Est. 300-367 | 54th great-grandfather |
| | | 17th cousin 60 times removed |
| Rose | January 14, 1845 | Great-grandmother |
| Rosella | WFT Est. 935-966 | 31st great-grandmother |
| | | Wife of the 2nd cousin 33 times removed |
| Rotheachts | WFT Est. Bef. 100 | 91st great-grandfather |
| | | 95th great-grandfather |
| Rucker, Reuben | WFT Est. 1740-1766 | Husband of the 4th great-grandaunt |
| Saint Margaret | 1043 | 29th great-grandmother |
| | | Half 1st cousin 31 times removed |
| | | 6th cousin 30 times removed |
| | | 7th cousin 31 times removed |
| Savghalach, Siorna | WFT Est. Bef. 100 | 89th great-grandfather |
| | | 93rd great-grandfather |
| Seabra | WFT Est. 1738-1761 | 3rd great-grandmother |
| Seargeaux, Elizabeth | WFT Est. 1358-1385 | 18th great-grandmother |
| | | Half 12th cousin 20 times removed |
| | | 15th cousin 20 times removed |
| | | 16th cousin 21 times removed |
| | | 17th cousin 19 times removed |
| | | 18th cousin 19 times removed |
| | | 17th cousin 21 times removed |
| | | 18th cousin 20 times removed |
| Seeley, Kathy | Private | Niece |
| Seeley, Kent | October 1958 | Nephew |
| Seeley, Kevin | October 1958 | Nephew |
| Seeley, Tom | | Brother-in-law |
| Seely, Sarah | Abt. 1776 | 2nd great-grandmother |
| Sergeaux, Richard | WFT Est. 1318-1359 | 19th great-grandfather |
| | | Husband of the half 11th cousin 21 times removed |
| | | Husband of the 14th cousin 21 times removed |
| | | Husband of the 15th cousin 22 times removed |
| | | Husband of the 16th cousin 20 times removed |
| | | Husband of the 17th cousin 20 times removed |
| | | Husband of the 16th cousin 22 times removed |
| | | Husband of the 17th cousin 21 times removed |
| Shields, Anna | March 30, 1886 | Grandmother of the wife |
| Shields, Barney | 1854 | Great-granduncle of the wife |
| Shields, Frank | 1895 | Granduncle of the wife |
| Shields, James | 1856 | Great-granduncle of the wife |
| Shields, Jeremiah | 1864 | Great-granduncle of the wife |
| Shields, Margaret | 1899 | Grandaunt of the wife |
| Shields, Margarett | 1862 | Great-grandaunt of the wife |
| Shields, Mary | 1899 | Grandaunt of the wife |
| Shields, Michael | 1848 | Great-granduncle of the wife |