| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 12th cousin 18 times removed | XLIV | 31 |
| 14th cousin 14 times removed | XLIV | 29 |
| 10th cousin 22 times removed | XLIV | 33 |
| 13th cousin 16 times removed | XLIV | 30 |
| 15th cousin 12 times removed | XLIV | 28 |
| 11th cousin 20 times removed | XLIV | 32 |
| 12th cousin 19 times removed | XLV | 32 |
| 15th cousin 13 times removed | XLV | 29 |
| 14th cousin 15 times removed | XLV | 30 |
| 13th cousin 17 times removed | XLV | 31 |
| 11th cousin 21 times removed | XLV | 33 |
| 14th cousin 16 times removed | XLVI | 31 |
| 13th cousin 18 times removed | XLVI | 32 |
| 12th cousin 20 times removed | XLVI | 33 |
| 15th cousin 14 times removed | XLVI | 30 |
| 16th cousin 12 times removed | XLVI | 29 |
| 11th cousin 22 times removed | XLVI | 34 |
| 15th cousin 15 times removed | XLVII | 31 |
| 16th cousin 13 times removed | XLVII | 30 |
| 14th cousin 17 times removed | XLVII | 32 |
| 13th cousin 19 times removed | XLVII | 33 |
| 15th cousin 16 times removed | XLVIII | 32 |
| 16th cousin 14 times removed | XLVIII | 31 |
| 14th cousin 18 times removed | XLVIII | 33 |
| 13th cousin 20 times removed | XLVIII | 34 |
| 15th cousin 17 times removed | XLIX | 33 |
| 16th cousin 15 times removed | XLIX | 32 |
| 14th cousin 19 times removed | XLIX | 34 |
| 16th cousin 16 times removed | L | 33 |
| 15th cousin 18 times removed | L | 34 |
| Stewart, William Of Castlemilk Keith | 18th great-granduncle | XXII | 21 |
| 3rd cousin 20 times removed | XXVIII | 24 |
| 3rd cousin 21 times removed | XXIX | 25 |
| 3rd cousin 22 times removed | XXX | 26 |
| 3rd cousin 23 times removed | XXXI | 27 |
| 4th cousin 21 times removed | XXXI | 26 |
| 4th cousin 22 times removed | XXXII | 27 |
| 4th cousin 23 times removed | XXXIII | 28 |
| 4th cousin 24 times removed | XXXIV | 29 |
| 4th cousin 25 times removed | XXXV | 30 |
| 4th cousin 26 times removed | XXXVI | 31 |
| 7th cousin 21 times removed | XXXVII | 29 |
| 7th cousin 22 times removed | XXXVIII | 30 |
| 7th cousin 23 times removed | XXXIX | 31 |
| 7th cousin 24 times removed | XL | 32 |
| 7th cousin 25 times removed | XLI | 33 |
| Stirling, Iain | 22nd great-grandfather | XXIV | 24 |
| Stirling, Katherine | 21st great-grandmother | XXIII | 23 |
| Strathearn, Annabella | 25th great-grandaunt | XXIX | 28 |
| 4th cousin 26 times removed | XXXVI | 31 |