| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 6th cousin 26 times removed | XL | 33 |
| Douglas, John | 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, Margaret | 14th great-grandmother | XVI | 16 |
| Wife of the 5th cousin 13 times removed | | |
| Wife of the 7th cousin 15 times removed | | |
| Wife of the half 7th cousin 15 times removed | | |
| Wife of the 7th cousin 16 times removed | | |
| Wife of the half 8th cousin 15 times removed | | |
| Wife of the half 8th cousin 16 times removed | | |
| Wife of the half 10th cousin 13 times removed | | |
| Wife of the 10th cousin 13 times removed | | |
| Wife of the 10th cousin 14 times removed | | |
| Wife of the half 11th cousin 13 times removed | | |
| Wife of the 11th cousin 13 times removed | | |
| Wife of the 10th cousin 15 times removed | | |
| Wife of the half 10th cousin 16 times removed | | |
| Wife of the 10th cousin 16 times removed | | |
| Wife of the 11th cousin 14 times removed | | |
| Wife of the 11th cousin 15 times removed | | |
| Wife of the 12th cousin 14 times removed | | |
| Wife of the half 11th cousin 16 times removed | | |
| Wife of the 13th cousin 12 times removed | | |
| Wife of the 11th cousin 16 times removed | | |
| Wife of the 11th cousin 17 times removed | | |
| Wife of the 11th cousin 18 times removed | | |
| Wife of the 12th cousin 17 times removed | | |
| Wife of the 13th cousin 15 times removed | | |
| Wife of the 11th cousin 19 times removed | | |
| Wife of the 14th cousin 14 times removed | | |
| Wife of the 14th cousin 15 times removed | | |
| Wife of the 14th cousin 16 times removed | | |