| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 16th cousin 13 times removed | XLVII | 30 |
| 14th cousin 17 times removed | XLVII | 32 |
| 15th cousin 16 times removed | XLVIII | 32 |
| 16th cousin 14 times removed | XLVIII | 31 |
| 14th cousin 18 times removed | XLVIII | 33 |
| 15th cousin 17 times removed | XLIX | 33 |
| 16th cousin 15 times removed | XLIX | 32 |
| 16th cousin 16 times removed | L | 33 |
| 15th cousin 18 times removed | L | 34 |
| 16th cousin 17 times removed | LI | 34 |
| Johnston, Benjamin | 9th great-granduncle | XIII | 12 |
| 7th cousin 10 times removed | XXVI | 18 |
| 6th cousin 12 times removed | XXVI | 19 |
| 7th cousin 11 times removed | XXVII | 19 |
| 7th cousin 14 times removed | XXX | 22 |
| 8th cousin 13 times removed | XXXI | 22 |
| 10th cousin 9 times removed | XXXI | 20 |
| 9th cousin 11 times removed | XXXI | 21 |
| 11th cousin 8 times removed | XXXII | 20 |
| 8th cousin 14 times removed | XXXII | 23 |
| 10th cousin 10 times removed | XXXII | 21 |
| 9th cousin 12 times removed | XXXII | 22 |
| 9th cousin 13 times removed | XXXIII | 23 |
| 11th cousin 9 times removed | XXXIII | 21 |
| Half 9th cousin 13 times removed | XXXIII | 23 |
| 10th cousin 11 times removed | XXXIII | 22 |
| Half 11th cousin 9 times removed | XXXIII | 21 |
| 10th cousin 12 times removed | XXXIV | 23 |
| 11th cousin 10 times removed | XXXIV | 22 |
| 12th cousin 8 times removed | XXXIV | 21 |
| 9th cousin 14 times removed | XXXIV | 24 |
| Half 11th cousin 10 times removed | XXXIV | 22 |
| Half 10th cousin 12 times removed | XXXIV | 23 |
| Half 9th cousin 14 times removed | XXXIV | 24 |
| Half 12th cousin 8 times removed | XXXIV | 21 |
| 11th cousin 11 times removed | XXXV | 23 |
| 13th cousin 7 times removed | XXXV | 21 |
| 9th cousin 15 times removed | XXXV | 25 |
| 12th cousin 9 times removed | XXXV | 22 |
| 10th cousin 13 times removed | XXXV | 24 |
| Half 11th cousin 11 times removed | XXXV | 23 |
| Half 10th cousin 13 times removed | XXXV | 24 |
| Half 12th cousin 9 times removed | XXXV | 22 |
| 12th cousin 10 times removed | XXXVI | 23 |
| 11th cousin 12 times removed | XXXVI | 24 |
| Half 12th cousin 10 times removed | XXXVI | 23 |
| 13th cousin 8 times removed | XXXVI | 22 |
| Half 11th cousin 12 times removed | XXXVI | 24 |
| 10th cousin 14 times removed | XXXVI | 25 |
| Half 10th cousin 14 times removed | XXXVI | 25 |