| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 1st cousin 24 times removed | XXVIII | 26 |
| 7th cousin 22 times removed | XXXVIII | 30 |
| 7th cousin 25 times removed | XLI | 33 |
| Montgomerie, Philip Belleme | 28th great-granduncle | XXXII | 31 |
| 29th great-granduncle | XXXIII | 32 |
| 30th great-granduncle | XXXIV | 33 |
| Montgomerie, Philip O'Brien | 27th great-grandfather | XXIX | 29 |
| 28th great-grandfather | XXX | 30 |
| 29th great-grandfather | XXXI | 31 |
| Montgomerie, Robert Belleme | 28th great-granduncle | XXXII | 31 |
| 29th great-granduncle | XXXIII | 32 |
| 30th great-granduncle | XXXIV | 33 |
| Montgomerie, Robert Dunbar | 26th great-grandfather | XXVIII | 28 |
| 27th great-grandfather | XXIX | 29 |
| 28th great-grandfather | XXX | 30 |
| Husband of the 1st cousin 28 times removed | | |
| Husband of the 1st cousin 31 times removed | | |
| Montgomerie, Robert Taurode | 29th great-granduncle | XXXIII | 32 |
| 30th great-granduncle | XXXIV | 33 |
| 31st great-granduncle | XXXV | 34 |
| Montgomerie, Roger | 30th great-grandfather | XXXII | 32 |
| 31st great-grandfather | XXXIII | 33 |
| 32nd great-grandfather | XXXIV | 34 |
| Montgomerie, Roger Belleme | 28th great-granduncle | XXXII | 31 |
| 29th great-granduncle | XXXIII | 32 |
| 30th great-granduncle | XXXIV | 33 |
| Montgomerie, Roger Taurode | 29th great-grandfather | XXXI | 31 |
| 30th great-grandfather | XXXII | 32 |
| 31st great-grandfather | XXXIII | 33 |
| Montgomerie, William | 31st great-grandfather | XXXIII | 33 |
| 32nd great-grandfather | XXXIV | 34 |
| 33rd great-grandfather | XXXV | 35 |
| Montgomerie, William Taurode | 29th great-granduncle | XXXIII | 32 |
| 30th great-granduncle | XXXIV | 33 |
| 31st great-granduncle | XXXV | 34 |
| Montgomery, Joanna Eglinton | 19th great-grandmother | XXI | 21 |
| 20th great-grandaunt | XXIV | 23 |
| 2nd cousin 18 times removed | XXIV | 21 |
| Half 2nd cousin 19 times removed | XXV | 22 |
| Half 2nd cousin 20 times removed | XXVI | 23 |
| 3rd cousin 18 times removed | XXVI | 22 |
| Half 2nd cousin 21 times removed | XXVII | 24 |
| Half 2nd cousin 22 times removed | XXVIII | 25 |
| 3rd cousin 20 times removed | XXVIII | 24 |
| 4th cousin 19 times removed | XXIX | 24 |
| 4th cousin 20 times removed | XXX | 25 |
| 3rd cousin 22 times removed | XXX | 26 |
| 5th cousin 19 times removed | XXXI | 25 |
| 6th cousin 17 times removed | XXXI | 24 |
| 4th cousin 21 times removed | XXXI | 26 |