| Male John FitzWilliam, of Sprotborough |
| Birth | Abt [J] Feb 1328 | |
| Death | Abt [J] 19 Jan 1385 | Howden, East Riding of Yorkshire, England |
| Burial | ||
| Marriage | ||
| Father | Sir John FitzWilliam, of Sprotborough | F0919 Group Sheet | |
| Mother | Joan Reresby | F0919 Group Sheet | |
| Female Elizabeth Clinton |
| Birth | Abt 1333 | |
| Death | Between 1401 and 1420 | |
| Burial | ||
| Father | Earl of Huntingdon Lord William de Clinton | F1065 Group Sheet | |
| Mother | ||
| Male Sir William FitzWilliam, of Sprotborough |
| Birth | Abt 1352 | |
| Death | 8 Apr 1398 | |
| Burial | ||
| Spouse | Maud Cromwell | F0918 | |
| Marriage | Bef 1377 | |
| Male Edmund FitzWilliam, of Wadworth |
| Birth | 1360 | |
| Death | 5 Feb 1430 | |
| Burial | Wadworth, Doncaster, Yorkshire West Riding, England |
|
| Spouse | Matilda Hotham | F0926 | |
| Marriage | ||