| Name | Relationship with Isabella de Taillefer | Civil | Canon |
| Clawson, Josiah D. | Husband of the 19th great-granddaughter | | |
| Husband of the 20th great-granddaughter | | |
| Clawson, Mildred | 21st great-granddaughter | XXIII | 23 |
| 22nd great-granddaughter | XXIV | 24 |
| Clawson, William Shinn | 20th great-grandson | XXII | 22 |
| 21st great-grandson | XXIII | 23 |
| Clemmer, Ava Margaret | 23rd great-granddaughter | XXV | 25 |
| 24th great-granddaughter | XXVI | 26 |
| Clemmer, Charles Byron Leroy | 23rd great-grandson | XXV | 25 |
| 24th great-grandson | XXVI | 26 |
| Clemmer, Charles William | Husband of the 22nd great-granddaughter | | |
| Husband of the 23rd great-granddaughter | | |
| Clemmer, Danny Lee | 24th great-grandson | XXVI | 26 |
| 25th great-grandson | XXVII | 27 |
| Clemmer, Doris Eileen | 24th great-granddaughter | XXVI | 26 |
| 25th great-granddaughter | XXVII | 27 |
| Clemmer, Erna Dee Dee Doreen | 24th great-granddaughter | XXVI | 26 |
| 25th great-granddaughter | XXVII | 27 |
| Clemmer, Hattie Elenora | 23rd great-granddaughter | XXV | 25 |
| 24th great-granddaughter | XXVI | 26 |
| Clemmer, James Eugene | 24th great-grandson | XXVI | 26 |
| 25th great-grandson | XXVII | 27 |
| Clemmer, James Morris | 23rd great-grandson | XXV | 25 |
| 24th great-grandson | XXVI | 26 |
| Clemmer, Marlene Ann | 24th great-granddaughter | XXVI | 26 |
| 25th great-granddaughter | XXVII | 27 |
| Clemmer, Mary Eliza | 23rd great-granddaughter | XXV | 25 |
| 24th great-granddaughter | XXVI | 26 |
| Clemmer, Sadye Ellen | 23rd great-granddaughter | XXV | 25 |
| 24th great-granddaughter | XXVI | 26 |
| Clemmer, William Allen Grant | 23rd great-grandson | XXV | 25 |
| 24th great-grandson | XXVI | 26 |
| Clossin, Carl David | 23rd great-grandson | XXV | 25 |
| 24th great-grandson | XXVI | 26 |
| Clossin, Harry | Husband of the 21st great-granddaughter | | |
| Husband of the 22nd great-granddaughter | | |
| Clossin, Helen Louise | 22nd great-granddaughter | XXIV | 24 |
| 23rd great-granddaughter | XXV | 25 |
| Clossin, Joe Daniel | 22nd great-grandson | XXIV | 24 |
| 23rd great-grandson | XXV | 25 |
| Clossin, Morris Miller | 22nd great-grandson | XXIV | 24 |
| 23rd great-grandson | XXV | 25 |
| Clough, John | Husband of the 20th great-granddaughter | | |
| Husband of the 21st great-granddaughter | | |
| Clough, Mary Anne | 21st great-granddaughter | XXIII | 23 |
| 22nd great-granddaughter | XXIV | 24 |
| Coldstream, Margaret Muir | Wife of the 21st great-grandson | | |
| Wife of the 22nd great-grandson | | |
| Coleman, Kate S. | Wife of the 19th great-grandson | | |
| Wife of the 20th great-grandson | | |