| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 29th great-grandmother | XXXI | 31 |
| Anne | 12th great-grandmother | XIV | 14 |
| 13th great-grandmother | XV | 15 |
| Anne | 29th great-grandmother | XXXI | 31 |
| 30th great-grandmother | XXXII | 32 |
| 32nd great-grandmother | XXXIV | 34 |
| 33rd great-grandmother | XXXV | 35 |
| Anthony, Elizabeth | Wife of the 3rd cousin 5 times removed | | |
| Anthony, Lucy A. | Wife of the 2nd cousin 4 times removed | | |
| Arbuthnot, Alexander Durham | 15th great-grandaunt | XIX | 18 |
| 4th cousin 15 times removed | XXV | 20 |
| 4th cousin 16 times removed | XXVI | 21 |
| Half 5th cousin 15 times removed | XXVII | 21 |
| 4th cousin 17 times removed | XXVII | 22 |
| 5th cousin 16 times removed | XXVIII | 22 |
| 5th cousin 17 times removed | XXIX | 23 |
| Half 5th cousin 17 times removed | XXIX | 23 |
| 5th cousin 18 times removed | XXX | 24 |
| Half 5th cousin 18 times removed | XXX | 24 |
| 6th cousin 17 times removed | XXXI | 24 |
| Half 6th cousin 17 times removed | XXXI | 24 |
| 7th cousin 16 times removed | XXXII | 24 |
| Half 6th cousin 18 times removed | XXXII | 25 |
| 7th cousin 17 times removed | XXXIII | 25 |
| 8th cousin 15 times removed | XXXIII | 24 |
| 7th cousin 18 times removed | XXXIV | 26 |
| 8th cousin 16 times removed | XXXIV | 25 |
| 7th cousin 19 times removed | XXXV | 27 |
| 9th cousin 15 times removed | XXXV | 25 |
| 8th cousin 17 times removed | XXXV | 26 |
| 7th cousin 20 times removed | XXXVI | 28 |
| 8th cousin 18 times removed | XXXVI | 27 |
| 9th cousin 16 times removed | XXXVI | 26 |
| 7th cousin 21 times removed | XXXVII | 29 |
| 9th cousin 17 times removed | XXXVII | 27 |
| 8th cousin 20 times removed | XXXVIII | 29 |
| 9th cousin 18 times removed | XXXVIII | 28 |
| 9th cousin 19 times removed | XXXIX | 29 |
| 9th cousin 20 times removed | XL | 30 |
| 9th cousin 21 times removed | XLI | 31 |
| 12th cousin 16 times removed | XLII | 29 |
| 12th cousin 17 times removed | XLIII | 30 |
| 12th cousin 18 times removed | XLIV | 31 |
| 12th cousin 19 times removed | XLV | 32 |
| 12th cousin 20 times removed | XLVI | 33 |
| Arbuthnot, Alexander Ogilvie | 16th great-granduncle | XX | 19 |
| 3rd cousin 16 times removed | XXIV | 20 |
| 3rd cousin 17 times removed | XXV | 21 |
| Half 4th cousin 16 times removed | XXVI | 21 |
| 3rd cousin 18 times removed | XXVI | 22 |