| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 11th cousin 14 times removed | XXXVIII | 26 |
| 11th cousin 15 times removed | XXXIX | 27 |
| 13th cousin 11 times removed | XXXIX | 25 |
| 11th cousin 16 times removed | XL | 28 |
| 12th cousin 14 times removed | XL | 27 |
| 13th cousin 12 times removed | XL | 26 |
| 11th cousin 17 times removed | XLI | 29 |
| 13th cousin 13 times removed | XLI | 27 |
| 12th cousin 16 times removed | XLII | 29 |
| 13th cousin 14 times removed | XLII | 28 |
| 16th cousin 12 times removed | XLVI | 29 |
| 16th cousin 13 times removed | XLVII | 30 |
| 16th cousin 14 times removed | XLVIII | 31 |
| 16th cousin 15 times removed | XLIX | 32 |
| 16th cousin 16 times removed | L | 33 |
| Lindsay, Isabel Pitcairn | 15th great-grandaunt | XIX | 18 |
| 3rd cousin 17 times removed | XXV | 21 |
| 3rd cousin 18 times removed | XXVI | 22 |
| 4th cousin 17 times removed | XXVII | 22 |
| Half 4th cousin 18 times removed | XXVIII | 23 |
| 5th cousin 18 times removed | XXX | 24 |
| 6th cousin 18 times removed | XXXII | 25 |
| 6th cousin 19 times removed | XXXIII | 26 |
| 6th cousin 20 times removed | XXXIV | 27 |
| 8th cousin 16 times removed | XXXIV | 25 |
| 6th cousin 21 times removed | XXXV | 28 |
| 7th cousin 19 times removed | XXXV | 27 |
| 8th cousin 17 times removed | XXXV | 26 |
| 6th cousin 22 times removed | XXXVI | 29 |
| 8th cousin 18 times removed | XXXVI | 27 |
| 7th cousin 21 times removed | XXXVII | 29 |
| 8th cousin 19 times removed | XXXVII | 28 |
| 11th cousin 17 times removed | XLI | 29 |
| 11th cousin 18 times removed | XLII | 30 |
| 11th cousin 19 times removed | XLIII | 31 |
| 11th cousin 20 times removed | XLIV | 32 |
| 11th cousin 21 times removed | XLV | 33 |
| Lindsay, James Bethune | 10th great-granduncle | XIV | 13 |
| 8th cousin 12 times removed | XXX | 21 |
| 8th cousin 13 times removed | XXXI | 22 |
| 9th cousin 12 times removed | XXXII | 22 |
| Half 9th cousin 13 times removed | XXXIII | 23 |
| 10th cousin 13 times removed | XXXV | 24 |
| 11th cousin 13 times removed | XXXVII | 25 |
| 11th cousin 14 times removed | XXXVIII | 26 |
| 11th cousin 15 times removed | XXXIX | 27 |
| 13th cousin 11 times removed | XXXIX | 25 |
| 11th cousin 16 times removed | XL | 28 |
| 12th cousin 14 times removed | XL | 27 |
| 13th cousin 12 times removed | XL | 26 |