Individual Details
Isabel FitzJohn
( - )
Families
| Spouse | Robert de Vieuxpont ( - 1264) |
| Child | Isabel de Vieuxpont ( - ) |
| Father | John FitzGeoffrey, Justiciar of Ireland (1215 - 1258) |
| Mother | Isabel Bigod (1212 - 1258) |
| Sibling | Joan FitzJohn ( - 1303) |
| Sibling | Maud FitzJohn (1237 - 1301) |
| Sibling | Aveline FitzJohn ( - 1274) |