| Husband: | John + FITZWILLIAM (c. 1280- ) | |
| Wife: | Joan + of RERESBY (c. 1285- ) | |
| Children: | Joan + FITZWILLIAM (1315-1385) | |
| Name: | John + FITZWILLIAM | |
| Sex: | Male | |
| Father: | - | |
| Mother: | - | |
| Birth | 1280 (est) | |
| Occupation | Knight | |
| Name: | Joan + of RERESBY | |
| Sex: | Female | |
| Father: | - | |
| Mother: | - | |
| Birth | 1285 (est) | |
| Name: | Joan + FITZWILLIAM | |
| Sex: | Female | |
| Spouse: | Brian + THORNHILL (1298-1369) | |
| Birth | 1315 | Sprotborough, Emley, Yorkshire, England |
| Death | 1385 (age 69-70) | Thornhill, West Riding, Yorkshire, England |