| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 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 |
| 4th cousin 22 times removed | XXXII | 27 |
| 5th cousin 21 times removed | XXXIII | 27 |
| 4th cousin 23 times removed | XXXIII | 28 |
| 7th cousin 17 times removed | XXXIII | 25 |
| 6th cousin 19 times removed | XXXIII | 26 |
| 5th cousin 22 times removed | XXXIV | 28 |
| 4th cousin 24 times removed | XXXIV | 29 |
| 7th cousin 18 times removed | XXXIV | 26 |
| 6th cousin 20 times removed | XXXIV | 27 |
| 5th cousin 23 times removed | XXXV | 29 |
| 4th cousin 25 times removed | XXXV | 30 |
| 7th cousin 19 times removed | XXXV | 27 |
| 6th cousin 21 times removed | XXXV | 28 |
| 4th cousin 26 times removed | XXXVI | 31 |
| 7th cousin 20 times removed | XXXVI | 28 |
| 6th cousin 22 times removed | XXXVI | 29 |
| 6th cousin 23 times removed | XXXVII | 30 |
| 7th cousin 21 times removed | XXXVII | 29 |
| 6th cousin 24 times removed | XXXVIII | 31 |
| 7th cousin 22 times removed | XXXVIII | 30 |
| 7th cousin 23 times removed | XXXIX | 31 |
| 9th cousin 19 times removed | XXXIX | 29 |
| 7th cousin 24 times removed | XL | 32 |
| 10th cousin 18 times removed | XL | 29 |
| 9th cousin 20 times removed | XL | 30 |
| 7th cousin 25 times removed | XLI | 33 |
| 10th cousin 19 times removed | XLI | 30 |
| 9th cousin 21 times removed | XLI | 31 |
| 10th cousin 20 times removed | XLII | 31 |
| 9th cousin 22 times removed | XLII | 32 |
| 10th cousin 21 times removed | XLIII | 32 |
| 9th cousin 23 times removed | XLIII | 33 |
| 10th cousin 22 times removed | XLIV | 33 |
| Douglas, William | 20th great-grandfather | XXII | 22 |
| Douglas, William | 24th great-granduncle | XXVIII | 27 |
| Douglas, William "Le Hardi" | 21st great-grandfather | XXIII | 23 |
| 23rd great-grandfather | XXV | 25 |
| 24th great-grandfather | XXVI | 26 |
| Husband of the 21st great-grandaunt | | |
| Husband of the 22nd great-grandaunt | | |
| Husband of the 23rd great-grandaunt | | |
| Husband of the 24th great-grandaunt | | |
| Husband of the 1st cousin 24 times removed | | |