| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 28th cousin 3 times removed | LXI | 32 |
| 27th cousin 5 times removed | LXI | 33 |
| 29th cousin twice removed | LXII | 32 |
| 28th cousin 4 times removed | LXII | 33 |
| 30th cousin once removed | LXIII | 32 |
| 29th cousin 3 times removed | LXIII | 33 |
| 28th cousin 5 times removed | LXIII | 34 |
| Half 30th cousin twice removed | LXIV | 33 |
| 31st cousin | LXIV | 32 |
| 30th cousin twice removed | LXIV | 33 |
| 29th cousin 4 times removed | LXIV | 34 |
| 30th cousin 3 times removed | LXV | 34 |
| 29th cousin 5 times removed | LXV | 35 |
| 31st cousin twice removed | LXVI | 34 |
| 32nd cousin once removed | LXVII | 34 |
| 33rd cousin | LXVIII | 34 |
| 32nd cousin twice removed | LXVIII | 35 |
| Seiwell, Rachel Kester | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Ray Samuel Eseman | Grandfather | II | 2 |
| Seiwell, Ray Samuel II Hug | Uncle | III | 2 |
| Seiwell, Richard Franklin Claton | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Rita Hug | Aunt | III | 2 |
| Seiwell, Sarah | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Stephen Horlacher | 2nd great-granduncle | VI | 5 |
| Seiwell, Stephen Koenig | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Valentine II Pennypacker | 4th great-granduncle | VIII | 7 |
| Seiwell, Valentine Jung | 5th great-grandfather | VII | 7 |
| Seiwell, William Henry Koenig | 2nd cousin 4 times removed | X | 7 |
| Seiwell, William Keplinger | 1st cousin 5 times removed | IX | 7 |
| Seltzer, S. | Wife of the 3rd cousin 5 times removed | | |
| Seton, Adam | 22nd great-grandfather | XXIV | 24 |
| 23rd great-grandfather | XXV | 25 |
| Seton, Alan | 19th great-grandfather | XXI | 21 |
| 20th great-grandfather | XXII | 22 |
| Seton, Alasdair Dunbar | 17th great-granduncle | XXI | 20 |
| 2nd cousin 19 times removed | XXV | 22 |
| 2nd cousin 21 times removed | XXVII | 24 |
| 2nd cousin 22 times removed | XXVIII | 25 |
| 2nd cousin 23 times removed | XXIX | 26 |
| 4th cousin 20 times removed | XXX | 25 |
| 5th cousin 18 times removed | XXX | 24 |
| 5th cousin 19 times removed | XXXI | 25 |
| 4th cousin 22 times removed | XXXII | 27 |
| 5th cousin 20 times removed | XXXII | 26 |
| 6th cousin 18 times removed | XXXII | 25 |
| 5th cousin 21 times removed | XXXIII | 27 |
| 7th cousin 17 times removed | XXXIII | 25 |
| 6th cousin 20 times removed | XXXIV | 27 |
| 9th cousin 14 times removed | XXXIV | 24 |
| 7th cousin 18 times removed | XXXIV | 26 |