| Male Sir John FitzWilliam, of Sprotborough |
| Birth | Abt 1290 | |
| Death | 10 Aug 1349 | |
| Burial | ||
| Marriage | ||
| Father | Sir William FitzWilliam, of Emley and Sprotborough | F0921 Group Sheet | |
| Mother | Maud Unknown | F0921 Group Sheet | |
| Female Joan Reresby |
| Birth | Between 1268 and 1311 | |
| Death | ||
| Burial | ||
| Father | Sir Adam de Reresby, of Thribergh | F0920 Group Sheet | |
| Mother | ||
| Male John FitzWilliam, of Sprotborough |
| Birth | Abt [J] Feb 1328 | |
| Death | Abt [J] 19 Jan 1385 | Howden, East Riding of Yorkshire, England |
| Burial | ||
| Spouse | Elizabeth Clinton | F0917 | |
| Marriage | ||