| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 11th cousin 17 times removed | XLI | 29 |
| 9th cousin 21 times removed | XLI | 31 |
| 11th cousin 18 times removed | XLII | 30 |
| 12th cousin 16 times removed | XLII | 29 |
| 11th cousin 19 times removed | XLIII | 31 |
| 12th cousin 17 times removed | XLIII | 30 |
| 14th cousin 14 times removed | XLIV | 29 |
| 12th cousin 18 times removed | XLIV | 31 |
| 14th cousin 15 times removed | XLV | 30 |
| 12th cousin 19 times removed | XLV | 32 |
| 14th cousin 16 times removed | XLVI | 31 |
| 12th cousin 20 times removed | XLVI | 33 |
| 14th cousin 17 times removed | XLVII | 32 |
| 14th cousin 18 times removed | XLVIII | 33 |
| Johnston, Edward Gordon | 10th great-grandfather | XII | 12 |
| 6th cousin 11 times removed | XXV | 18 |
| 5th cousin 13 times removed | XXV | 19 |
| 6th cousin 12 times removed | XXVI | 19 |
| 6th cousin 15 times removed | XXIX | 22 |
| 7th cousin 14 times removed | XXX | 22 |
| 9th cousin 10 times removed | XXX | 20 |
| 8th cousin 12 times removed | XXX | 21 |
| 10th cousin 9 times removed | XXXI | 20 |
| 7th cousin 15 times removed | XXXI | 23 |
| 9th cousin 11 times removed | XXXI | 21 |
| 8th cousin 13 times removed | XXXI | 22 |
| 8th cousin 14 times removed | XXXII | 23 |
| 10th cousin 10 times removed | XXXII | 21 |
| Half 8th cousin 14 times removed | XXXII | 23 |
| 9th cousin 12 times removed | XXXII | 22 |
| Half 10th cousin 10 times removed | XXXII | 21 |
| 9th cousin 13 times removed | XXXIII | 23 |
| 10th cousin 11 times removed | XXXIII | 22 |
| 11th cousin 9 times removed | XXXIII | 21 |
| 8th cousin 15 times removed | XXXIII | 24 |
| Half 10th cousin 11 times removed | XXXIII | 22 |
| Half 9th cousin 13 times removed | XXXIII | 23 |
| Half 8th cousin 15 times removed | XXXIII | 24 |
| Half 11th cousin 9 times removed | XXXIII | 21 |
| 10th cousin 12 times removed | XXXIV | 23 |
| 12th cousin 8 times removed | XXXIV | 21 |
| 8th cousin 16 times removed | XXXIV | 25 |
| 11th cousin 10 times removed | XXXIV | 22 |
| 9th cousin 14 times removed | XXXIV | 24 |
| Half 10th cousin 12 times removed | XXXIV | 23 |
| Half 9th cousin 14 times removed | XXXIV | 24 |
| Half 11th cousin 10 times removed | XXXIV | 22 |
| 11th cousin 11 times removed | XXXV | 23 |
| 10th cousin 13 times removed | XXXV | 24 |
| Half 11th cousin 11 times removed | XXXV | 23 |