| Name | Relationship with Natalie Seiwell | Civil | Canon |
| Half 10th cousin 13 times removed | XXXV | 24 |
| 10th cousin 13 times removed | XXXV | 24 |
| 10th cousin 14 times removed | XXXVI | 25 |
| Half 11th cousin 13 times removed | XXXVII | 25 |
| 11th cousin 13 times removed | XXXVII | 25 |
| 10th cousin 15 times removed | XXXVII | 26 |
| Half 10th cousin 16 times removed | XXXVIII | 27 |
| 10th cousin 16 times removed | XXXVIII | 27 |
| 11th cousin 14 times removed | XXXVIII | 26 |
| 11th cousin 15 times removed | XXXIX | 27 |
| 12th cousin 14 times removed | XL | 27 |
| Half 11th cousin 16 times removed | XL | 28 |
| 13th cousin 12 times removed | XL | 26 |
| 11th cousin 16 times removed | XL | 28 |
| 11th cousin 17 times removed | XLI | 29 |
| 11th cousin 18 times removed | XLII | 30 |
| 12th cousin 17 times removed | XLIII | 30 |
| 13th cousin 15 times removed | XLIII | 29 |
| 11th cousin 19 times removed | XLIII | 31 |
| 14th cousin 14 times removed | XLIV | 29 |
| 14th cousin 15 times removed | XLV | 30 |
| 14th cousin 16 times removed | XLVI | 31 |
| 14th cousin 17 times removed | XLVII | 32 |
| 16th cousin 13 times removed | XLVII | 30 |
| 14th cousin 18 times removed | XLVIII | 33 |
| 16th cousin 14 times removed | XLVIII | 31 |
| 18th cousin 11 times removed | XLIX | 30 |
| 16th cousin 15 times removed | XLIX | 32 |
| 17th cousin 14 times removed | L | 32 |
| 17th cousin 16 times removed | LII | 34 |
| 18th cousin 14 times removed | LII | 33 |
| 16th cousin 18 times removed | LII | 35 |
| Stewart, Hawise MacBride | 21st great-grandaunt | XXV | 24 |
| 22nd great-grandaunt | XXVI | 25 |
| 23rd great-grandaunt | XXVII | 26 |
| 24th great-grandaunt | XXVIII | 27 |
| 1st cousin 24 times removed | XXVIII | 26 |
| 1st cousin 25 times removed | XXIX | 27 |
| 1st cousin 26 times removed | XXX | 28 |
| 1st cousin 27 times removed | XXXI | 29 |
| 1st cousin 28 times removed | XXXII | 30 |
| 1st cousin 29 times removed | XXXIII | 31 |
| 4th cousin 24 times removed | XXXIV | 29 |
| 4th cousin 25 times removed | XXXV | 30 |
| 4th cousin 26 times removed | XXXVI | 31 |
| 4th cousin 27 times removed | XXXVII | 32 |
| 4th cousin 28 times removed | XXXVIII | 33 |
| Stewart, Henry | 25th great-granduncle | XXIX | 28 |
| Stewart, Henry Huntington | 26th great-grandfather | XXVIII | 28 |
| Stewart, Hodierna Huntington | 26th great-grandaunt | XXX | 29 |