| Name | Relationship with Isabella de Taillefer | Civil | Canon |
| Wife of the 22nd great-grandson | | |
| Huston, Mary West | Wife of the 21st great-grandson | | |
| Wife of the 22nd great-grandson | | |
| Hutchins, Wife | Wife of the 19th great-grandson | | |
| Wife of the 20th great-grandson | | |
| I, John | Husband of the great-granddaughter | | |
| I, John | Husband of the 4th great-granddaughter | | |
| Ievan, Howell ap | Husband of the 8th great-granddaughter | | |
| Husband of the 9th great-granddaughter | | |
| Innes, Emily Leonard | Wife of the 21st great-grandson | | |
| Wife of the 22nd great-grandson | | |
| Isabel | Wife of the 3rd great-grandson | | |
| Isabella | 2nd great-granddaughter | IV | 4 |
| Isabella | 3rd great-granddaughter | V | 5 |
| Israel, Mary | Wife of the 18th great-grandson | | |
| Wife of the 19th great-grandson | | |
| Jackson, Mary | Wife of the 19th great-grandson | | |
| Wife of the 20th great-grandson | | |
| Jarman, Mary | Wife of the 19th great-grandson | | |
| Wife of the 20th great-grandson | | |
| Jeffers, Annie Miller | Wife of the 20th great-grandson | | |
| Wife of the 21st great-grandson | | |
| Jeffries, Eliza Berry | 21st great-granddaughter | XXIII | 23 |
| 22nd great-granddaughter | XXIV | 24 |
| Jeffries, Evan Shelby | Husband of the 20th great-granddaughter | | |
| Husband of the 21st great-granddaughter | | |
| Jeffries, Evan Shelby | 21st great-grandson | XXIII | 23 |
| 22nd great-grandson | XXIV | 24 |
| Jeffries, Henry Ellet | 21st great-grandson | XXIII | 23 |
| 22nd great-grandson | XXIV | 24 |
| Jeffries, James Earl | 21st great-grandson | XXIII | 23 |
| 22nd great-grandson | XXIV | 24 |
| Jeffries, Jennie Maury | 21st great-granddaughter | XXIII | 23 |
| 22nd great-granddaughter | XXIV | 24 |
| Jeffries, Joseph Ellet | 21st great-grandson | XXIII | 23 |
| 22nd great-grandson | XXIV | 24 |
| Jeffries, Kate Ellet | 21st great-granddaughter | XXIII | 23 |
| 22nd great-granddaughter | XXIV | 24 |
| Jeffries, Nathaniel | 21st great-grandson | XXIII | 23 |
| 22nd great-grandson | XXIV | 24 |
| Jeffries, Rebecca Ellet | 21st great-granddaughter | XXIII | 23 |
| 22nd great-granddaughter | XXIV | 24 |
| Jeffries, Sarah Terry | 21st great-granddaughter | XXIII | 23 |
| 22nd great-granddaughter | XXIV | 24 |
| Jeffries, William Terry | 21st great-grandson | XXIII | 23 |
| 22nd great-grandson | XXIV | 24 |
| Jelly, Aunt Peanut Butter & | 22nd great-granddaughter | XXIV | 24 |
| 23rd great-granddaughter | XXV | 25 |
| Jenk, Myrtle Leeper Jensen | Wife of the 22nd great-grandson | | |
| Wife of the 23rd great-grandson | | |