| Name | Relationship with Gilbert de Clare | Civil | Canon |
|---|
| Norton, James | Husband of the 22nd great-granddaughter | | |
| Olsen, Augusta Matilda | Wife of the 20th great-grandson | | |
| Ortwine, Daniel Fred | 23rd great-grandson | XXV | 25 |
| Ortwine, Gail Margaret | 23rd great-granddaughter | XXV | 25 |
| Ortwine, John | Husband of the 22nd great-granddaughter | | |
| Osborn, John | Husband of the 21st great-granddaughter | | |
| Owen, Jerry Garfield | Husband of the 25th great-granddaughter | | |
| Owen, Joshep | Husband of the 18th great-granddaughter | | |
| Owens, Billy | 25th great-grandson | XXVII | 27 |
| Owens, Brenda | Wife of the 24th great-grandson | | |
| Owens, Elizabeth Nicole | 25th great-granddaughter | XXVII | 27 |
| Owens, Hazel Belle | 25th great-granddaughter | XXVII | 27 |
| Owens, Marvin | 25th great-grandson | XXVII | 27 |
| Padgett, Annie W. | Wife of the 19th great-grandson | | |
| Page, Annette | Wife of the 21st great-grandson | | |
| Palmer, Emily A. D. Anderson nee | Wife of the 20th great-grandson | | |
| Parke, Hannah | 18th great-granddaughter | XX | 20 |
| Parke, James Pemberton | 18th great-grandson | XX | 20 |
| Parke, Pemberton | 18th great-grandson | XX | 20 |
| Parke, Rachel | 18th great-granddaughter | XX | 20 |
| Parke, Thomas | Husband of the 17th great-granddaughter | | |
| Parke, Thomas | 18th great-grandson | XX | 20 |
| Parkhurst, William H. | Husband of the 21st great-granddaughter | | |
| Payne, Leonard | Husband of the 23rd great-granddaughter | | |
| Pearce, Jennie | Wife of the 21st great-grandson | | |
| Pell, Richard M. | Husband of the 20th great-granddaughter | | |
| Pemberton, Hannah | 17th great-granddaughter | XIX | 19 |
| Pemberton, James | Husband of the 16th great-granddaughter | | |
| Pemberton, James | 17th great-grandson | XIX | 19 |
| Pemberton, Mary | 17th great-granddaughter | XIX | 19 |
| Pemberton, Phineas | 17th great-grandson | XIX | 19 |
| Pemberton, Rachel | 17th great-granddaughter | XIX | 19 |
| Pemberton, Sarah | 17th great-granddaughter | XIX | 19 |
| Pepper, Emily | Wife of the 21st great-grandson | | |
| Pettet, Ruth | Wife of the 19th great-grandson | | |
| Pichon, Delia | Wife of the 22nd great-grandson | | |
| Plantagenet, Antigone | Wife of the 6th great-grandson | | |
| Pleasants, Anne | Wife of the 20th great-grandson | | |
| Plummer, Bessy Allison | 21st great-granddaughter | XXIII | 23 |
| Plummer, David Allison | 21st great-grandson | XXIII | 23 |
| Plummer, Isabella Campbell | 21st great-granddaughter | XXIII | 23 |
| Plummer, John | Husband of the 20th great-granddaughter | | |
| Plummer, John | 21st great-grandson | XXIII | 23 |
| Pollock, Ruby Edith | Wife of the 21st great-grandson | | |
| Potts, Sarah Rhoads | 22nd great-granddaughter | XXIV | 24 |
| Potts, Thomas Charles | Husband of the 21st great-granddaughter | | |
| Potts, Thomas Isaac | 22nd great-grandson | XXIV | 24 |
| Powell, Charles Worth | 20th great-grandson | XXII | 22 |
| Powell, Edith | 21st great-granddaughter | XXIII | 23 |
| Powell, Ellen Catherwood | 21st great-granddaughter | XXIII | 23 |
