| Name | Relationship with Natalie Seiwell | Civil | Canon |
| Wife of the 25th great-granduncle | | |
| Wife of the 26th great-granduncle | | |
| Wife of the 27th great-granduncle | | |
| Wife of the 28th great-granduncle | | |
| Wife of the 29th great-granduncle | | |
| Wife of the 30th great-granduncle | | |
| Wife of the 31st great-granduncle | | |
| Dilthorne, Margery | 17th great-grandmother | XIX | 19 |
| Doetterer, Christina | Wife of the 1st cousin 7 times removed | | |
| Donelly, Mary | Wife of the 4th cousin 4 times removed | | |
| Dorothea | 19th great-grandmother | XXI | 21 |
| Dorrington, Anne Elizabeth? Elizabeth | 13th great-grandmother | XV | 15 |
| 14th great-grandmother | XVI | 16 |
| Dorsch, Agathe | 14th great-grandmother | XVI | 16 |
| Dorsch, Ludwig | 15th great-grandfather | XVII | 17 |
| Douglas, Alexander | 20th great-grandfather | XXII | 22 |
| 23rd great-grandfather | XXV | 25 |
| 24th great-grandfather | XXVI | 26 |
| Douglas, Andrew Crawford | 25th great-grandfather | XXVII | 27 |
| Douglas, Archibald "The Grim" | 21st great-granduncle | XXV | 24 |
| 1st cousin 21 times removed | XXV | 23 |
| 22nd great-granduncle | XXVI | 25 |
| 1st cousin 23 times removed | XXVII | 25 |
| 2nd cousin 21 times removed | XXVII | 24 |
| 1st cousin 24 times removed | XXVIII | 26 |
| 2nd cousin 22 times removed | XXVIII | 25 |
| 2nd cousin 23 times removed | XXIX | 26 |
| 2nd cousin 24 times removed | XXX | 27 |
| 3rd cousin 22 times removed | XXX | 26 |
| 3rd cousin 23 times removed | XXXI | 27 |
| 3rd cousin 24 times removed | XXXII | 28 |
| 3rd cousin 25 times removed | XXXIII | 29 |
| 3rd cousin 26 times removed | XXXIV | 30 |
| 3rd cousin 27 times removed | XXXV | 31 |
| 6th cousin 22 times removed | XXXVI | 29 |
| 6th cousin 23 times removed | XXXVII | 30 |
| 6th cousin 24 times removed | XXXVIII | 31 |
| 6th cousin 25 times removed | XXXIX | 32 |
| 6th cousin 26 times removed | XL | 33 |
| Douglas, Archibald Moray | 19th great-granduncle | XXIII | 22 |
| Half 2nd cousin 18 times removed | XXIV | 21 |
| Half 2nd cousin 20 times removed | XXVI | 23 |
| Half 3rd cousin 19 times removed | XXVII | 23 |
| 2nd cousin 22 times removed | XXVIII | 25 |
| 4th cousin 19 times removed | XXIX | 24 |
| 5th cousin 18 times removed | XXX | 24 |
| 4th cousin 20 times removed | XXX | 25 |
| 5th cousin 19 times removed | XXXI | 25 |
| 4th cousin 21 times removed | XXXI | 26 |
| 5th cousin 20 times removed | XXXII | 26 |