| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 12th great-granduncle | XVI | 15 |
| Harding, Henry Arledge | 8th great-grandfather | X | 10 |
| 9th great-grandfather | XI | 11 |
| Harding, Henry Belcher | 7th great-grandfather | IX | 9 |
| 8th great-grandfather | X | 10 |
| Harding, Henry George | 6th great-granduncle | X | 9 |
| 7th great-granduncle | XI | 10 |
| Harding, Henry Mosley | 9th great-grandfather | XI | 11 |
| 10th great-grandfather | XII | 12 |
| Harding, Ida | 11th great-grandaunt | XV | 14 |
| 12th great-grandaunt | XVI | 15 |
| Harding, John | 12th great-grandfather | XIV | 14 |
| 13th great-grandfather | XV | 15 |
| Harding, John Orley | 10th great-granduncle | XIV | 13 |
| 11th great-granduncle | XV | 14 |
| Harding, Mary Arledge | 8th great-grandaunt | XII | 11 |
| 9th great-grandaunt | XIII | 12 |
| Harding, Merida | 11th great-grandaunt | XV | 14 |
| 12th great-grandaunt | XVI | 15 |
| Harding, Nancy George | 6th great-grandmother | VIII | 8 |
| 7th great-grandmother | IX | 9 |
| Harding, Nicholas George | 6th great-granduncle | X | 9 |
| 7th great-granduncle | XI | 10 |
| Harding, Sally Arledge | 8th great-grandaunt | XII | 11 |
| 9th great-grandaunt | XIII | 12 |
| Harding, Sarah | 11th great-grandaunt | XV | 14 |
| 12th great-grandaunt | XVI | 15 |
| Harding, Steve | 11th great-granduncle | XV | 14 |
| 12th great-granduncle | XVI | 15 |
| Harding, Thomas Orley | 10th great-grandfather | XII | 12 |
| 11th great-grandfather | XIII | 13 |
| Harding, Wilmouth George | 6th great-granduncle | X | 9 |
| 7th great-granduncle | XI | 10 |
| Harris, Clara Isabelle | Wife of the 5th cousin 3 times removed | | |
| Hart, Jacob | Husband of the 2nd cousin 4 times removed | | |
| Hartford, Washington Irving | Husband of the 5th cousin 3 times removed | | |
| Hattie | Wife of the 3rd cousin 5 times removed | | |
| Hawberke, Isolde Sibton | 24th great-grandmother | XXVI | 26 |
| Hawberke, Laurence | 25th great-grandfather | XXVII | 27 |
| Hay, Alexander Reid | 14th great-grandfather | XVI | 16 |
| Hay, Alicia Hay | 19th great-grandmother | XXI | 21 |
| 2nd cousin 18 times removed | XXIV | 21 |
| 1st cousin 21 times removed | XXV | 23 |
| 2nd cousin 20 times removed | XXVI | 23 |
| Half 2nd cousin 20 times removed | XXVI | 23 |
| 2nd cousin 21 times removed | XXVII | 24 |
| Half 3rd cousin 20 times removed | XXVIII | 24 |
| 4th cousin 18 times removed | XXVIII | 23 |
| Half 3rd cousin 21 times removed | XXIX | 25 |
| 5th cousin 18 times removed | XXX | 24 |