| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 5th cousin 21 times removed | XXXIII | 27 |
| Half 4th cousin 23 times removed | XXXIII | 28 |
| 6th cousin 19 times removed | XXXIII | 26 |
| 4th cousin 23 times removed | XXXIII | 28 |
| 5th cousin 24 times removed | XXXVI | 30 |
| 6th cousin 22 times removed | XXXVI | 29 |
| 9th cousin 20 times removed | XL | 30 |
| 9th cousin 21 times removed | XLI | 31 |
| 11th cousin 18 times removed | XLII | 30 |
| 9th cousin 22 times removed | XLII | 32 |
| 10th cousin 21 times removed | XLIII | 32 |
| 10th cousin 23 times removed | XLV | 34 |
| 11th cousin 21 times removed | XLV | 33 |
| 9th cousin 25 times removed | XLV | 35 |
| Wife of the half 3rd cousin 20 times removed | | |
| Wife of the half 4th cousin 20 times removed | | |
| Wife of the 4th cousin 20 times removed | | |
| Wife of the half 3rd cousin 23 times removed | | |
| Wife of the half 4th cousin 23 times removed | | |
| Wife of the 6th cousin 19 times removed | | |
| Wife of the 4th cousin 23 times removed | | |
| Wife of the 5th cousin 21 times removed | | |
| Wife of the 6th cousin 22 times removed | | |
| Wife of the 5th cousin 24 times removed | | |
| Holland, Margaret Zouche | 20th great-grandaunt | XXIV | 23 |
| 23rd great-grandaunt | XXVII | 26 |
| 9th cousin 20 times removed | XL | 30 |
| 7th cousin 24 times removed | XL | 32 |
| 8th cousin 23 times removed | XLI | 32 |
| 8th cousin 25 times removed | XLIII | 34 |
| 9th cousin 23 times removed | XLIII | 33 |
| 7th cousin 27 times removed | XLIII | 35 |
| Holland, Margery Zouche | 20th great-grandaunt | XXIV | 23 |
| 23rd great-grandaunt | XXVII | 26 |
| 9th cousin 20 times removed | XL | 30 |
| 7th cousin 24 times removed | XL | 32 |
| 8th cousin 23 times removed | XLI | 32 |
| 8th cousin 25 times removed | XLIII | 34 |
| 9th cousin 23 times removed | XLIII | 33 |
| 7th cousin 27 times removed | XLIII | 35 |
| Holland, Maud Zouche | 20th great-grandaunt | XXIV | 23 |
| 23rd great-grandaunt | XXVII | 26 |
| 9th cousin 20 times removed | XL | 30 |
| 7th cousin 24 times removed | XL | 32 |
| 8th cousin 23 times removed | XLI | 32 |
| 8th cousin 25 times removed | XLIII | 34 |
| 9th cousin 23 times removed | XLIII | 33 |
| 7th cousin 27 times removed | XLIII | 35 |
| Holland, Otho Zouche | 20th great-granduncle | XXIV | 23 |
| 23rd great-granduncle | XXVII | 26 |