| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 5th cousin 5 times removed | XVII | 11 |
| 2nd cousin 12 times removed | XVIII | 15 |
| 5th cousin 6 times removed | XVIII | 12 |
| Adams, Thomas | 10th great-grandfather | XII | 12 |
| Adelaide | 27th great-grandmother | XXIX | 29 |
| 28th great-grandmother | XXX | 30 |
| 30th great-grandmother | XXXII | 32 |
| 31st great-grandmother | XXXIII | 33 |
| Adelina Of Oswestry | 28th great-grandmother | XXX | 30 |
| 29th great-grandmother | XXXI | 31 |
| 30th great-grandmother | XXXII | 32 |
| 31st great-grandmother | XXXIII | 33 |
| Adeline | 33rd great-grandmother | XXXV | 35 |
| Adeliza | 28th great-grandmother | XXX | 30 |
| 31st great-grandmother | XXXIII | 33 |
| Adtherton, John | 24th great-grandfather | XXVI | 26 |
| Adtherton, Katherina | 23rd great-grandmother | XXV | 25 |
| Aenor | 31st great-grandmother | XXXIII | 33 |
| Ageuestein, Catherina | 13th great-grandmother | XV | 15 |
| 15th great-grandmother | XVII | 17 |
| Agnes | 17th great-grandmother | XIX | 19 |
| 18th great-grandmother | XX | 20 |
| Agnes | 22nd great-grandmother | XXIV | 24 |
| Agnes | 9th great-grandmother | XI | 11 |
| Albright, Eva | 5th great-grandmother | VII | 7 |
| Albright, Mattheis | 6th great-grandfather | VIII | 8 |
| Alexander, Alex | 15th great-grandfather | XVII | 17 |
| Alexander, Alexander Graham | 17th great-grandfather | XIX | 19 |
| Alexander, Andrew | 18th great-grandfather | XX | 20 |
| Alexander, Andrew | 15th great-granduncle | XIX | 18 |
| Alexander, Archibald | 15th great-granduncle | XIX | 18 |
| Alexander, Charles Ashton | 10th great-grandaunt | XIV | 13 |
| Alexander, Charles Erskine | 13th great-granduncle | XVII | 16 |
| Alexander, Charles Graham | 12th great-granduncle | XVI | 15 |
| Alexander, Charles Scarborough | 11th great-grandaunt | XV | 14 |
| Alexander, Christine Coultie | 14th great-grandaunt | XVIII | 17 |
| Alexander, Elizabeth | 15th great-grandaunt | XIX | 18 |
| Alexander, Elizabeth Coultie | 14th great-grandaunt | XVIII | 17 |
| Alexander, Elizabeth Erskine | 13th great-grandaunt | XVII | 16 |
| Alexander, Elizabeth Forges | 16th great-grandaunt | XX | 19 |
| Alexander, Gerald Fowke | 9th great-grandfather | XI | 11 |
| 2nd cousin 11 times removed | XVII | 14 |
| Husband of the 2nd cousin 11 times removed | | |
| Alexander, Gerard Scarborough | 11th great-granduncle | XV | 14 |
| Alexander, Henry Erskine | 13th great-granduncle | XVII | 16 |
| Alexander, James Forges | 16th great-granduncle | XX | 19 |
| Alexander, Janet | 15th great-grandaunt | XIX | 18 |
| Alexander, Janet Coultie | 14th great-grandaunt | XVIII | 17 |
| Alexander, Janet Erskine | 13th great-grandaunt | XVII | 16 |
| Alexander, Janet Forges | 16th great-grandaunt | XX | 19 |