| Name | Relationship with Wendy Libby | Civil | Canon |
|---|
| Spear, Sally | Wife of the 3rd cousin 6 times removed | | |
| Spinney, Johannah | Wife of the 2nd cousin 7 times removed | | |
| Spoethe, Kate Emma | Wife of the 5th cousin 3 times removed | | |
| Sr., Fredrick Burnham | Husband of the 1st cousin once removed | | |
| Stanton, John Gilman | Husband of the 3rd cousin 4 times removed | | |
| Staples | Husband of the 1st cousin 3 times removed | | |
| Star, Mary | Wife of the 1st cousin 9 times removed | | |
| Steel, Nettie | Wife of the 5th cousin 4 times removed | | |
| Stephenson, Charles | Husband of the 7th cousin 3 times removed | | |
| Sterling, Frederick Clark | 8th cousin twice removed | XX | 11 |
| Sterling, Jeannette Ingersoll | 8th cousin twice removed | XX | 11 |
| Sterling, Willis Betts | Husband of the 7th cousin 3 times removed | | |
| Stetson, Rachel | Wife of the 5th cousin 4 times removed | | |
| Stevens, Abigail | Wife of the 5th great-grandfather | | |
| Stevens, Herbert E. | Husband of the 7th cousin twice removed | | |
| Stevens, Mary | 6th great-grandmother | VIII | 8 |
| Stevens, Samuel | 7th great-grandfather | IX | 9 |
| Steward, Prudence | Wife of the 3rd cousin 6 times removed | | |
| Steward, William | Husband of the 2nd cousin 6 times removed | | |
| Stewart, Charles M. | Husband of the 7th cousin 3 times removed | | |
| Stickney, Hannah Hodges | Wife of the 5th cousin 5 times removed | | |
| Still, Crickett | 8th cousin twice removed | XX | 11 |
| Still, Henry | Husband of the 7th cousin 3 times removed | | |
| Stinson | Husband of the 6th cousin 3 times removed | | |
| Stockbridge, Anna | Wife of the 2nd cousin 7 times removed | | |
| Stone, Christie A. | Wife of the 7th cousin twice removed | | |
| Stowe, Arthur William | 7th cousin twice removed | XVIII | 10 |
| Stowe, Charles Henry | Husband of the 6th cousin 3 times removed | | |
| Stowe, Charles Noble | 7th cousin twice removed | XVIII | 10 |
| Strought | Husband of the 5th cousin 4 times removed | | |
| Sullivan, Alice | Wife of the 6th cousin 3 times removed | | |
| Sully, Brittania | Wife of the 5th cousin 4 times removed | | |
| Sutton, James Sylvester | 6th cousin twice removed | XVI | 9 |
| Sutton, John Preston | Husband of the 5th cousin 3 times removed | | |
| Sutton, Robert Lester | 6th cousin twice removed | XVI | 9 |
| Swazy, Unknown | Husband of the 8th cousin twice removed | | |
| Sweeney, Charles | Husband of the 5th cousin 4 times removed | | |
| Sweet, John | Husband of the 2nd cousin 7 times removed | | |
| Sweetland, Irena | Wife of the 4th cousin 6 times removed | | |
| Swemerton, Benjamin | Husband of the 3rd cousin 7 times removed | | |
| Swift, Ann C. | Wife of the 5th cousin 4 times removed | | |
| Swift, Jerusha | Wife of the 5th cousin 5 times removed | | |
| Sykes, Ashbel | Husband of the 5th cousin 5 times removed | | |
| Sykes, Bingham | 6th cousin 4 times removed | XVIII | 11 |
| Sykes, Bingham | 7th cousin 3 times removed | XIX | 11 |
| Sykes, Doreen | 6th cousin 4 times removed | XVIII | 11 |
| Sykes, Edwin | 7th cousin 3 times removed | XIX | 11 |
| Sykes, Edwin | 6th cousin 4 times removed | XVIII | 11 |
| Sykes, Heber | Husband of the 5th cousin 5 times removed | | |
| Sykes, John | 6th cousin 4 times removed | XVIII | 11 |
