| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 7th cousin 21 times removed | XXXVII | 29 |
| 7th cousin 22 times removed | XXXVIII | 30 |
| Husband of the 4th cousin 15 times removed | | |
| Husband of the 4th cousin 16 times removed | | |
| Husband of the half 5th cousin 15 times removed | | |
| Husband of the 4th cousin 17 times removed | | |
| Husband of the 5th cousin 16 times removed | | |
| Husband of the 5th cousin 17 times removed | | |
| Husband of the half 5th cousin 17 times removed | | |
| Husband of the 5th cousin 18 times removed | | |
| Husband of the half 5th cousin 18 times removed | | |
| Husband of the 6th cousin 17 times removed | | |
| Husband of the half 6th cousin 17 times removed | | |
| Husband of the 7th cousin 16 times removed | | |
| Husband of the half 6th cousin 18 times removed | | |
| Husband of the 7th cousin 17 times removed | | |
| Husband of the 8th cousin 15 times removed | | |
| Husband of the 7th cousin 18 times removed | | |
| Husband of the 8th cousin 16 times removed | | |
| Husband of the 7th cousin 19 times removed | | |
| Husband of the 9th cousin 15 times removed | | |
| Husband of the 8th cousin 17 times removed | | |
| Husband of the 7th cousin 20 times removed | | |
| Husband of the 8th cousin 18 times removed | | |
| Husband of the 9th cousin 16 times removed | | |
| Husband of the 7th cousin 21 times removed | | |
| Husband of the 9th cousin 17 times removed | | |
| Husband of the 8th cousin 20 times removed | | |
| Husband of the 9th cousin 18 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 12th cousin 16 times removed | | |
| Husband of the 12th cousin 17 times removed | | |
| Husband of the 12th cousin 18 times removed | | |
| Husband of the 12th cousin 19 times removed | | |
| Husband of the 12th cousin 20 times removed | | |
| Barclay, Walter Leslie | 15th great-granduncle | XIX | 18 |
| 6th cousin 16 times removed | XXX | 23 |
| 6th cousin 18 times removed | XXXII | 25 |
| 7th cousin 18 times removed | XXXIV | 26 |
| 7th cousin 19 times removed | XXXV | 27 |
| 6th cousin 22 times removed | XXXVI | 29 |
| 7th cousin 20 times removed | XXXVI | 28 |
| 6th cousin 23 times removed | XXXVII | 30 |
| 7th cousin 21 times removed | XXXVII | 29 |
| 7th cousin 22 times removed | XXXVIII | 30 |
| Barclay, William | 16th great-grandfather | XVIII | 18 |
| Husband of the 5th cousin 17 times removed | | |
| Husband of the 5th cousin 19 times removed | | |