| Name | Relationship with Michael Biddulph | Civil | Canon |
| 7th cousin 5 times removed | XXI | 13 |
| 8th cousin 5 times removed | XXIII | 14 |
| 9th cousin 3 times removed | XXIII | 13 |
| Biddulph, Humphry | 8th great-granduncle | XII | 11 |
| Biddulph, James Henry | 3rd great-granduncle | VII | 6 |
| 7th cousin 4 times removed | XX | 12 |
| 6th cousin 6 times removed | XX | 13 |
| 7th cousin 6 times removed | XXII | 14 |
| 8th cousin 4 times removed | XXII | 13 |
| Biddulph, Jane | 5th great-grandaunt | IX | 8 |
| 5th cousin 6 times removed | XVIII | 12 |
| 4th cousin 8 times removed | XVIII | 13 |
| Biddulph, Janice Claire | Aunt | III | 2 |
| 11th cousin | XXIV | 12 |
| 10th cousin twice removed | XXIV | 13 |
| 11th cousin twice removed | XXVI | 14 |
| 12th cousin | XXVI | 13 |
| Biddulph, John | 8th great-granduncle | XII | 11 |
| Biddulph, John | 6th great-granduncle | X | 9 |
| Biddulph, John | 5th great-granduncle | IX | 8 |
| 5th cousin 6 times removed | XVIII | 12 |
| 4th cousin 8 times removed | XVIII | 13 |
| Biddulph, John | 4th great-granduncle | VIII | 7 |
| 6th cousin 5 times removed | XIX | 12 |
| 5th cousin 7 times removed | XIX | 13 |
| Biddulph, John | 1st cousin 5 times removed | IX | 7 |
| 7th cousin 4 times removed | XX | 12 |
| 6th cousin 6 times removed | XX | 13 |
| Husband of the 3rd great-grandaunt | | |
| Husband of the 7th cousin 4 times removed | | |
| Husband of the 6th cousin 6 times removed | | |
| Husband of the 7th cousin 6 times removed | | |
| Husband of the 8th cousin 4 times removed | | |
| Biddulph, John Burnet | 3rd great-granduncle | VII | 6 |
| 7th cousin 4 times removed | XX | 12 |
| 6th cousin 6 times removed | XX | 13 |
| 7th cousin 6 times removed | XXII | 14 |
| 8th cousin 4 times removed | XXII | 13 |
| Biddulph, Louisa | 3rd great-grandaunt | VII | 6 |
| 7th cousin 4 times removed | XX | 12 |
| 6th cousin 6 times removed | XX | 13 |
| 7th cousin 6 times removed | XXII | 14 |
| 8th cousin 4 times removed | XXII | 13 |
| Biddulph, Lucy Maud | Great-grandaunt | V | 4 |
| 9th cousin twice removed | XXII | 12 |
| 8th cousin 4 times removed | XXII | 13 |
| 9th cousin 4 times removed | XXIV | 14 |
| 10th cousin twice removed | XXIV | 13 |
| Biddulph, Malcolm Francis | Grandfather | II | 2 |
| 10th cousin once removed | XXIII | 12 |