| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 7th cousin 23 times removed | XXXIX | 31 |
| 8th cousin 22 times removed | XL | 31 |
| 7th cousin 24 times removed | XL | 32 |
| 8th cousin 23 times removed | XLI | 32 |
| 7th cousin 25 times removed | XLI | 33 |
| 8th cousin 24 times removed | XLII | 33 |
| Erskine, Henry Of Mar | 23rd great-grandfather | XXV | 25 |
| 25th great-grandfather | XXVII | 27 |
| 26th great-grandfather | XXVIII | 28 |
| Erskine, Isabella Inchmartin | 17th great-grandmother | XIX | 19 |
| 19th great-grandaunt | XXIII | 22 |
| 1st cousin 22 times removed | XXVI | 24 |
| 3rd cousin 20 times removed | XXVIII | 24 |
| Wife of the 5th cousin 18 times removed | | |
| Wife of the 4th cousin 21 times removed | | |
| Wife of the 5th cousin 20 times removed | | |
| Wife of the 5th cousin 21 times removed | | |
| Wife of the 7th cousin 17 times removed | | |
| Wife of the 5th cousin 22 times removed | | |
| Wife of the 7th cousin 21 times removed | | |
| Wife of the 7th cousin 22 times removed | | |
| Wife of the 7th cousin 23 times removed | | |
| Wife of the 10th cousin 17 times removed | | |
| Wife of the 10th cousin 18 times removed | | |
| Wife of the 10th cousin 19 times removed | | |
| Wife of the 10th cousin 20 times removed | | |
| Wife of the 10th cousin 21 times removed | | |
| Wife of the 10th cousin 22 times removed | | |
| Wife of the 10th cousin 23 times removed | | |
| Erskine, Jane | 14th great-grandmother | XVI | 16 |
| Erskine, Janet | 22nd great-grandmother | XXIV | 24 |
| 23rd great-grandmother | XXV | 25 |
| Wife of the 21st great-granduncle | | |
| Wife of the 23rd great-granduncle | | |
| Wife of the 6th cousin 23 times removed | | |
| Wife of the 6th cousin 26 times removed | | |
| Erskine, Janet Gilronan | 19th great-grandaunt | XXIII | 22 |
| 21st great-grandaunt | XXV | 24 |
| 22nd great-grandaunt | XXVI | 25 |
| Erskine, Jean Lindsay | 1st cousin 19 times removed | XXIII | 21 |
| Half 19th great-grandaunt | XXIII | 22 |
| 20th great-grandaunt | XXIV | 23 |
| 1st cousin 21 times removed | XXV | 23 |
| Half 21st great-grandaunt | XXV | 24 |
| Half 22nd great-grandaunt | XXVI | 25 |
| 2nd cousin 21 times removed | XXVII | 24 |
| 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 |