| Name | Relationship with Michael Biddulph | Civil | Canon |
| 9th cousin 3 times removed | XXIII | 13 |
| 10th cousin 3 times removed | XXV | 14 |
| 11th cousin once removed | XXV | 13 |
| Biddulph, Margaret | 9th great-grandaunt | XIII | 12 |
| Biddulph, Margaret | 4th great-grandaunt | VIII | 7 |
| 6th cousin 5 times removed | XIX | 12 |
| 5th cousin 7 times removed | XIX | 13 |
| Biddulph, Margaret Jane | 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, Margaretta | 5th great-grandaunt | IX | 8 |
| 5th cousin 6 times removed | XVIII | 12 |
| 4th cousin 8 times removed | XVIII | 13 |
| Biddulph, Maria | 5th great-grandaunt | IX | 8 |
| 5th cousin 6 times removed | XVIII | 12 |
| 4th cousin 8 times removed | XVIII | 13 |
| Biddulph, Mark Sterling | Brother | II | 1 |
| 11th cousin once removed | XXV | 13 |
| 12th cousin once removed | XXVII | 14 |
| Biddulph, Mary | 7th great-grandaunt | XI | 10 |
| Biddulph, Mary | 6th great-grandaunt | X | 9 |
| Biddulph, Mary Burnet | 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 |
| Wife of the 1st cousin 5 times removed | | |
| Wife of the 7th cousin 4 times removed | | |
| Wife of the 6th cousin 6 times removed | | |
| Biddulph, Mary Ellen | 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, Michael | 8th great-grandfather | X | 10 |
| Biddulph, Michael | 7th great-granduncle | XI | 10 |
| Biddulph, Michael | 6th great-granduncle | X | 9 |
| Biddulph, Michael | 5th great-granduncle | IX | 8 |
| 5th cousin 6 times removed | XVIII | 12 |
| 4th cousin 8 times removed | XVIII | 13 |
| Biddulph, Michael Andrew | Self | | 0 |
| 11th cousin once removed | XXV | 13 |
| 12th cousin once removed | XXVII | 14 |
| Biddulph, Peter Michael | Father | I | 1 |
| 11th cousin | XXIV | 12 |
| 10th cousin twice removed | XXIV | 13 |
| 11th cousin twice removed | XXVI | 14 |
| 12th cousin | XXVI | 13 |