| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 11th cousin 16 times removed | XL | 28 |
| 10th cousin 18 times removed | XL | 29 |
| 12th cousin 14 times removed | XL | 27 |
| 13th cousin 12 times removed | XL | 26 |
| 11th cousin 17 times removed | XLI | 29 |
| 10th cousin 19 times removed | XLI | 30 |
| 12th cousin 15 times removed | XLI | 28 |
| 13th cousin 13 times removed | XLI | 27 |
| 14th cousin 12 times removed | XLII | 27 |
| 13th cousin 14 times removed | XLII | 28 |
| 12th cousin 16 times removed | XLII | 29 |
| 11th cousin 18 times removed | XLII | 30 |
| 14th cousin 13 times removed | XLIII | 28 |
| 13th cousin 15 times removed | XLIII | 29 |
| 12th cousin 17 times removed | XLIII | 30 |
| 11th cousin 19 times removed | XLIII | 31 |
| 13th cousin 16 times removed | XLIV | 30 |
| 12th cousin 18 times removed | XLIV | 31 |
| 14th cousin 14 times removed | XLIV | 29 |
| 15th cousin 12 times removed | XLIV | 28 |
| 13th cousin 17 times removed | XLV | 31 |
| 15th cousin 13 times removed | XLV | 29 |
| 14th cousin 15 times removed | XLV | 30 |
| 16th cousin 11 times removed | XLV | 28 |
| 15th cousin 14 times removed | XLVI | 30 |
| 16th cousin 12 times removed | XLVI | 29 |
| 14th cousin 16 times removed | XLVI | 31 |
| 15th cousin 15 times removed | XLVII | 31 |
| 16th cousin 13 times removed | XLVII | 30 |
| 14th cousin 17 times removed | XLVII | 32 |
| 15th cousin 16 times removed | XLVIII | 32 |
| 16th cousin 14 times removed | XLVIII | 31 |
| 14th cousin 18 times removed | XLVIII | 33 |
| 15th cousin 17 times removed | XLIX | 33 |
| 16th cousin 15 times removed | XLIX | 32 |
| 16th cousin 16 times removed | L | 33 |
| 15th cousin 18 times removed | L | 34 |
| 16th cousin 17 times removed | LI | 34 |
| Johnston, Michael | 9th great-grandfather | XI | 11 |
| 7th cousin 10 times removed | XXVI | 18 |
| 6th cousin 12 times removed | XXVI | 19 |
| 7th cousin 11 times removed | XXVII | 19 |
| 7th cousin 14 times removed | XXX | 22 |
| 8th cousin 13 times removed | XXXI | 22 |
| 10th cousin 9 times removed | XXXI | 20 |
| 9th cousin 11 times removed | XXXI | 21 |
| 11th cousin 8 times removed | XXXII | 20 |
| 8th cousin 14 times removed | XXXII | 23 |
| 10th cousin 10 times removed | XXXII | 21 |
| 9th cousin 12 times removed | XXXII | 22 |