| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 4th cousin 19 times removed | XXIX | 24 |
| 3rd cousin 21 times removed | XXIX | 25 |
| 4th cousin 20 times removed | XXX | 25 |
| 3rd cousin 22 times removed | XXX | 26 |
| 5th cousin 19 times removed | XXXI | 25 |
| 4th cousin 21 times removed | XXXI | 26 |
| 5th cousin 20 times removed | XXXII | 26 |
| 4th cousin 22 times removed | XXXII | 27 |
| 5th cousin 21 times removed | XXXIII | 27 |
| 5th cousin 22 times removed | XXXIV | 28 |
| 5th cousin 23 times removed | XXXV | 29 |
| 5th cousin 24 times removed | XXXVI | 30 |
| 5th cousin 25 times removed | XXXVII | 31 |
| 8th cousin 20 times removed | XXXVIII | 29 |
| 8th cousin 21 times removed | XXXIX | 30 |
| 8th cousin 22 times removed | XL | 31 |
| 8th cousin 23 times removed | XLI | 32 |
| 8th cousin 24 times removed | XLII | 33 |
| Douglas, Dufugan | 26th great-grandfather | XXVIII | 28 |
| 27th great-grandfather | XXIX | 29 |
| 28th great-grandfather | XXX | 30 |
| 29th great-grandfather | XXXI | 31 |
| 30th great-grandfather | XXXII | 32 |
| 31st great-grandfather | XXXIII | 33 |
| 32nd great-grandfather | XXXIV | 34 |
| Douglas, Duncan Dunkeld | 23rd great-granduncle | XXVII | 26 |
| 24th great-granduncle | XXVIII | 27 |
| 25th great-granduncle | XXIX | 28 |
| 26th great-granduncle | XXX | 29 |
| 27th great-granduncle | XXXI | 30 |
| 28th great-granduncle | XXXII | 31 |
| 2nd cousin 26 times removed | XXXII | 29 |
| 29th great-granduncle | XXXIII | 32 |
| 2nd cousin 27 times removed | XXXIII | 30 |
| 2nd cousin 28 times removed | XXXIV | 31 |
| 2nd cousin 29 times removed | XXXV | 32 |
| 2nd cousin 30 times removed | XXXVI | 33 |
| Douglas, Eleanor | 19th great-grandaunt | XXIII | 22 |
| Half 20th great-grandaunt | XXIV | 23 |
| 21st great-grandaunt | XXV | 24 |
| 22nd great-grandaunt | XXVI | 25 |
| 2nd cousin 21 times removed | XXVII | 24 |
| 1st cousin 23 times removed | XXVII | 25 |
| 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 |