| Name | Relationship with Natalie Seiwell | Civil | Canon |
| Townsend, Thomas Scogan | 23rd great-grandfather | XXV | 25 |
| Townsend, Walter Haywell | 24th great-grandfather | XXVI | 26 |
| Trussel, Barbli Herrmann | 11th great-grandaunt | XV | 14 |
| Trussel, Catharina Herrmann | 11th great-grandaunt | XV | 14 |
| Trussel, Claus | 12th great-grandfather | XIV | 14 |
| Trussel, Hans Herrmann | 11th great-granduncle | XV | 14 |
| Trussel, Margaret Herrmann | 11th great-grandmother | XIII | 13 |
| Tschantz, Cathrina | 12th great-grandmother | XIV | 14 |
| Wife of the 10th great-granduncle | | |
| Tudor, Arthur Plantagenet | 17th great-granduncle | XXI | 20 |
| Tudor, Catherine Plantagenet | 17th great-grandaunt | XXI | 20 |
| Tudor, Edmund | 19th great-grandfather | XXI | 21 |
| Tudor, Edmund Plantagenet | 17th great-granduncle | XXI | 20 |
| Tudor, Elizabeth Plantagenet | 17th great-grandaunt | XXI | 20 |
| Tudor, Henry Beaufort | 18th great-grandfather | XX | 20 |
| Tudor, Henry Plantagenet | 17th great-granduncle | XXI | 20 |
| Tudor, Margaret Plantagenet | 17th great-grandmother | XIX | 19 |
| Wife of the 2nd cousin 16 times removed | | |
| Wife of the 4th cousin 18 times removed | | |
| Wife of the half 4th cousin 18 times removed | | |
| Wife of the 4th cousin 19 times removed | | |
| Wife of the half 5th cousin 18 times removed | | |
| Wife of the half 5th cousin 19 times removed | | |
| Wife of the half 7th cousin 16 times removed | | |
| Wife of the 7th cousin 16 times removed | | |
| Wife of the 7th cousin 17 times removed | | |
| Wife of the half 8th cousin 16 times removed | | |
| Wife of the 8th cousin 16 times removed | | |
| Wife of the 7th cousin 18 times removed | | |
| Wife of the half 7th cousin 19 times removed | | |
| Wife of the 7th cousin 19 times removed | | |
| Wife of the 8th cousin 17 times removed | | |
| Wife of the 8th cousin 18 times removed | | |
| Wife of the 9th cousin 17 times removed | | |
| Wife of the half 8th cousin 19 times removed | | |
| Wife of the 10th cousin 15 times removed | | |
| Wife of the 8th cousin 19 times removed | | |
| Wife of the 8th cousin 20 times removed | | |
| Wife of the 8th cousin 21 times removed | | |
| Wife of the 9th cousin 20 times removed | | |
| Wife of the 10th cousin 18 times removed | | |
| Wife of the 8th cousin 22 times removed | | |
| Wife of the 11th cousin 17 times removed | | |
| Wife of the 11th cousin 18 times removed | | |
| Wife of the 11th cousin 19 times removed | | |
| Wife of the 11th cousin 20 times removed | | |
| Wife of the 13th cousin 16 times removed | | |
| Wife of the 11th cousin 21 times removed | | |
| Wife of the 13th cousin 17 times removed | | |
| Wife of the 15th cousin 14 times removed | | |