| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 24th great-granduncle | XXVIII | 27 |
| 26th great-granduncle | XXX | 29 |
| Comyn, Walter | 24th great-grandfather | XXVI | 26 |
| 26th great-grandfather | XXVIII | 28 |
| 27th great-grandfather | XXIX | 29 |
| Comyn, William | 25th great-grandfather | XXVII | 27 |
| 26th great-grandfather | XXVIII | 28 |
| 27th great-grandfather | XXIX | 29 |
| 29th great-grandfather | XXXI | 31 |
| Comyn, William Bearsson | 23rd great-grandfather | XXV | 25 |
| 24th great-grandfather | XXVI | 26 |
| 25th great-grandfather | XXVII | 27 |
| 27th great-grandfather | XXIX | 29 |
| Conde, Robert Or Roger Of Thorngaste Chesney | 29th great-grandfather | XXXI | 31 |
| Husband of the 28th great-grandaunt | | |
| Husband of the 31st great-grandmother | | |
| Husband of the 31st great-grandaunt | | |
| Conde, Robert Osbert Of Wickhambreux | 30th great-grandfather | XXXII | 32 |
| Condet, Isabel Meschines | 28th great-grandmother | XXX | 30 |
| 1st cousin 29 times removed | XXXIII | 31 |
| Half 30th great-grandaunt | XXXIV | 33 |
| 1st cousin 32 times removed | XXXVI | 34 |
| Condet, Roger Of Covenby | 28th great-granduncle | XXXII | 31 |
| 1st cousin 29 times removed | XXXIII | 31 |
| Half 30th great-granduncle | XXXIV | 33 |
| 1st cousin 32 times removed | XXXVI | 34 |
| Conigsburgh, Lora | 23rd great-grandmother | XXV | 25 |
| Wife of the 1st cousin 24 times removed | | |
| Wife of the 4th cousin 19 times removed | | |
| Wife of the 5th cousin 20 times removed | | |
| Wife of the 5th cousin 21 times removed | | |
| Wife of the 5th cousin 22 times removed | | |
| Wife of the 5th cousin 23 times removed | | |
| Wife of the 5th cousin 24 times removed | | |
| Conigsburgh, William Of Tullybody | 24th great-grandfather | XXVI | 26 |
| Constance | 30th great-grandmother | XXXII | 32 |
| 31st great-grandmother | XXXIII | 33 |
| 33rd great-grandmother | XXXV | 35 |
| 34th great-grandmother | XXXVI | 36 |
| Conteville, Emma Falaise | 31st great-grandmother | XXXIII | 33 |
| 32nd great-grandmother | XXXIV | 34 |
| 34th great-grandmother | XXXVI | 36 |
| Copenhauer, Amy | Wife of the 6th cousin twice removed | | |
| Cornouaille, Alain | 30th great-grandfather | XXXII | 32 |
| 32nd great-grandfather | XXXIV | 34 |
| 33rd great-grandfather | XXXV | 35 |
| 35th great-grandfather | XXXVII | 37 |
| Cornouaille, Benedict | 31st great-grandfather | XXXIII | 33 |
| 33rd great-grandfather | XXXV | 35 |
| 34th great-grandfather | XXXVI | 36 |