| Name | Relationship with Gilbert de Clare | Civil | Canon |
| Fuller, Mary Burd | Wife of the 21st great-grandson | | |
| Furnam, Elizabeth H. | Wife of the 20th great-grandson | | |
| Gamewell, Hannah L. | Wife of the 20th great-grandson | | |
| Gardiner, Patience Story nee | Wife of the 13th great-grandson | | |
| Garretson, Mary Liston | Wife of the 20th great-grandson | | |
| Gearld, Adam | 25th great-grandson | XXVII | 27 |
| Gearld, Angel Marie | 25th great-granddaughter | XXVII | 27 |
| Gearld, Christopher Valen | 25th great-grandson | XXVII | 27 |
| Gearld, David Wayne | 25th great-grandson | XXVII | 27 |
| Gearld, Gig Dale | 24th great-grandson | XXVI | 26 |
| Gearld, Joshua Thomas | 25th great-grandson | XXVII | 27 |
| Gearld, Madelyn Elizabeth | 26th great-granddaughter | XXVIII | 28 |
| Gearld, Olivia | 26th great-granddaughter | XXVIII | 28 |
| Gearld, Patrick Shawn | 25th great-grandson | XXVII | 27 |
| Gearld, Phillip Valen | 24th great-grandson | XXVI | 26 |
| Gearld, Randy Lee | 25th great-grandson | XXVII | 27 |
| Gearld, Robert Gage | 26th great-grandson | XXVIII | 28 |
| Gearld, Robert Joseph | 25th great-grandson | XXVII | 27 |
| Gearld, Sabrina Kay | 24th great-granddaughter | XXVI | 26 |
| Gearld, Thomas J. | 26th great-grandson | XXVIII | 28 |
| Gearld, Tracy Lee | 24th great-grandson | XXVI | 26 |
| Gearld, Vernon Dale | Husband of the 23rd great-granddaughter | | |
| Gearld, Wayne Curtis | 24th great-grandson | XXVI | 26 |
| Gibbs, Hannah | Wife of the 18th great-grandson | | |
| Givens, Phillip | Husband of the 19th great-granddaughter | | |
| Givins, Mary | Wife of the 18th great-grandson | | |
| Glendenning, Alice Edgar | 20th great-granddaughter | XXII | 22 |
| Glendenning, Ann Woods | 19th great-granddaughter | XXI | 21 |
| Glendenning, Catherine Edgar | 20th great-granddaughter | XXII | 22 |
| Glendenning, Catherine Edgar | 21st great-granddaughter | XXIII | 23 |
| Glendenning, Edgar | 20th great-grandson | XXII | 22 |
| Glendenning, Ethel Logan | 21st great-granddaughter | XXIII | 23 |
| Glendenning, Florence | 20th great-granddaughter | XXII | 22 |
| Glendenning, George | Husband of the 18th great-granddaughter | | |
| Glendenning, George | 20th great-grandson | XXII | 22 |
| Glendenning, Hannah Eleanor | 20th great-granddaughter | XXII | 22 |
| Glendenning, Hannah Moore Smith | 19th great-granddaughter | XXI | 21 |
| Glendenning, Jean Logan | 21st great-granddaughter | XXIII | 23 |
| Glendenning, Jessie Logan | 20th great-granddaughter | XXII | 22 |
| Glendenning, John Edgar | 20th great-grandson | XXII | 22 |
| Glendenning, Logan | 20th great-grandson | XXII | 22 |
| Glendenning, Maria Jane | 20th great-granddaughter | XXII | 22 |
| Glendenning, Minna Ann Carpenter | 20th great-granddaughter | XXII | 22 |
| Glendenning, Minna Ann Carpenter | 20th great-granddaughter | XXII | 22 |
| Glendenning, Robert Witton | 19th great-grandson | XXI | 21 |
| Glendenning, Robert Witton | 20th great-grandson | XXII | 22 |
| Glendenning, Sarah Logan | 20th great-granddaughter | XXII | 22 |
| Glover, Catherine | Wife of the 18th great-grandson | | |
| Goodwin, Mary M. | Wife of the 18th great-grandson | | |
| Goodwin, Rachel | Wife of the 18th great-grandson | | |