| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 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 |
| Erskine, John | 22nd great-grandfather | XXIV | 24 |
| 24th great-grandfather | XXVI | 26 |
| 25th great-grandfather | XXVII | 27 |
| Erskine, John | 20th great-grandfather | XXII | 22 |
| 22nd great-grandfather | XXIV | 24 |
| 23rd great-grandfather | XXV | 25 |
| Erskine, John Or Mar | 21st great-grandfather | XXIII | 23 |
| 23rd great-grandfather | XXV | 25 |
| 24th great-grandfather | XXVI | 26 |
| Erskine, Margaret Inchmartin | 19th great-grandmother | XXI | 21 |
| 17th great-grandaunt | XXI | 20 |
| 1st cousin 22 times removed | XXVI | 24 |
| 3rd cousin 20 times removed | XXVIII | 24 |
| Erskine, Nicholas Of Kinnoull Lindsay | 1st cousin 19 times removed | XXIII | 21 |
| Half 19th great-granduncle | XXIII | 22 |
| 20th great-granduncle | XXIV | 23 |
| 1st cousin 21 times removed | XXV | 23 |
| Half 21st great-granduncle | XXV | 24 |
| Half 22nd great-granduncle | 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 |
| 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 |
| Erskine, Robert | 18th great-granduncle | XXII | 21 |
| 21st great-grandfather | XXIII | 23 |
| 20th great-granduncle | XXIV | 23 |
| Husband of the 20th great-grandmother | | |
| Husband of the 22nd great-grandmother | | |
| Husband of the 23rd great-grandmother | | |
| Husband of the 1st cousin 22 times removed | | |
| Husband of the 1st cousin 24 times removed | | |