| Male Sir William de Fiennes |
| Birth | ||
| Death | 1302 | |
| Burial | ||
| Marriage | ||
| Father | Ingelram de Fiennes | F4405 Group Sheet | |
| Mother | Unknown | F4405 Group Sheet | |
| Female Lady Blanche de Brienne, of Loupeland |
| Birth | ||
| Death | ||
| Burial | ||
| Father | Grand Butler France Jean de Brienne | F4331 Group Sheet | |
| Mother | Jeanne Of Ch?teaudun | F4331 Group Sheet | |
| Female Margaret de Fiennes |
| Birth | ||
| Death | 7 Feb 1333 | |
| Burial | ||
| Spouse | Sir Edmund de Mortimer, Lord of Wigmore | F3285 | |
| Marriage | ||