| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 9th cousin 18 times removed | XXXVIII | 28 |
| 9th cousin 19 times removed | XXXIX | 29 |
| 9th cousin 20 times removed | XL | 30 |
| 9th cousin 21 times removed | XLI | 31 |
| 12th cousin 16 times removed | XLII | 29 |
| 12th cousin 17 times removed | XLIII | 30 |
| 12th cousin 18 times removed | XLIV | 31 |
| 12th cousin 19 times removed | XLV | 32 |
| 12th cousin 20 times removed | XLVI | 33 |
| Arbuthnot, Hugh | 26th great-grandfather | XXVIII | 28 |
| Arbuthnot, Hugh | 24th great-grandfather | XXVI | 26 |
| Arbuthnot, Hugh | 23rd great-grandfather | XXV | 25 |
| Arbuthnot, Hugh | 20th great-grandfather | XXII | 22 |
| Arbuthnot, Hugh Douglas | 18th great-grandfather | XX | 20 |
| Husband of the 1st cousin 19 times removed | | |
| Husband of the half 2nd cousin 18 times removed | | |
| Husband of the 1st cousin 20 times removed | | |
| Husband of the 2nd cousin 19 times removed | | |
| Husband of the 2nd cousin 20 times removed | | |
| Husband of the half 2nd cousin 20 times removed | | |
| Husband of the half 2nd cousin 21 times removed | | |
| Husband of the 3rd cousin 20 times removed | | |
| Husband of the half 3rd cousin 20 times removed | | |
| Husband of the half 3rd cousin 21 times removed | | |
| Husband of the 4th cousin 20 times removed | | |
| Husband of the 5th cousin 18 times removed | | |
| Husband of the 4th cousin 21 times removed | | |
| Husband of the 5th cousin 19 times removed | | |
| Husband of the 4th cousin 22 times removed | | |
| Husband of the 6th cousin 18 times removed | | |
| Husband of the 5th cousin 20 times removed | | |
| Husband of the 4th cousin 23 times removed | | |
| Husband of the 5th cousin 21 times removed | | |
| Husband of the 6th cousin 19 times removed | | |
| Husband of the 4th cousin 24 times removed | | |
| Husband of the 6th cousin 20 times removed | | |
| Husband of the 5th cousin 23 times removed | | |
| Husband of the 6th cousin 21 times removed | | |
| Husband of the 6th cousin 22 times removed | | |
| Husband of the 6th cousin 23 times removed | | |
| Husband of the 6th cousin 24 times removed | | |
| Husband of the 9th cousin 19 times removed | | |
| Husband of the 9th cousin 20 times removed | | |
| Husband of the 9th cousin 21 times removed | | |
| Husband of the 9th cousin 22 times removed | | |
| Husband of the 9th cousin 23 times removed | | |
| Arbuthnot, Hugh Durham | 15th great-granduncle | XIX | 18 |
| 4th cousin 15 times removed | XXV | 20 |
| 4th cousin 16 times removed | XXVI | 21 |
| Half 5th cousin 15 times removed | XXVII | 21 |