| Name | Relationship with John FitzAlan | Civil | Canon |
| Griscom, Lydia Hall | 16th great-grandniece | XX | 19 |
| 1st cousin 18 times removed | XXII | 20 |
| Half 2nd cousin 19 times removed | XXV | 22 |
| 3rd cousin 18 times removed | XXVI | 22 |
| 3rd cousin 19 times removed | XXVII | 23 |
| 4th cousin 17 times removed | XXVII | 22 |
| Half 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 19 times removed | XXIX | 24 |
| Half 4th cousin 19 times removed | XXIX | 24 |
| Griscom, Margaret Morris | 16th great-grandniece | XX | 19 |
| 1st cousin 18 times removed | XXII | 20 |
| Half 2nd cousin 19 times removed | XXV | 22 |
| 3rd cousin 18 times removed | XXVI | 22 |
| 3rd cousin 19 times removed | XXVII | 23 |
| 4th cousin 17 times removed | XXVII | 22 |
| Half 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 19 times removed | XXIX | 24 |
| Half 4th cousin 19 times removed | XXIX | 24 |
| Griscom, Mary Starr | 17th great-grandniece | XXI | 20 |
| 1st cousin 19 times removed | XXIII | 21 |
| Half 2nd cousin 20 times removed | XXVI | 23 |
| 3rd cousin 19 times removed | XXVII | 23 |
| 3rd cousin 20 times removed | XXVIII | 24 |
| 4th cousin 18 times removed | XXVIII | 23 |
| Half 4th cousin 19 times removed | XXIX | 24 |
| 4th cousin 19 times removed | XXIX | 24 |
| 4th cousin 20 times removed | XXX | 25 |
| Half 4th cousin 20 times removed | XXX | 25 |
| Griscom, Richard Woodnutt | 16th great-grandnephew | XX | 19 |
| 1st cousin 18 times removed | XXII | 20 |
| Half 2nd cousin 19 times removed | XXV | 22 |
| 3rd cousin 18 times removed | XXVI | 22 |
| 3rd cousin 19 times removed | XXVII | 23 |
| 4th cousin 17 times removed | XXVII | 22 |
| Half 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 19 times removed | XXIX | 24 |
| Half 4th cousin 19 times removed | XXIX | 24 |
| Griscom, Rodman Ellison | 16th great-grandnephew | XX | 19 |
| 1st cousin 18 times removed | XXII | 20 |
| Half 2nd cousin 19 times removed | XXV | 22 |
| 3rd cousin 18 times removed | XXVI | 22 |
| 3rd cousin 19 times removed | XXVII | 23 |
| 4th cousin 17 times removed | XXVII | 22 |
| Half 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 18 times removed | XXVIII | 23 |
| 4th cousin 19 times removed | XXIX | 24 |
| Half 4th cousin 19 times removed | XXIX | 24 |