Individual Details
Living
( - )
Families
| Spouse | Hugh de Courtenay, 1st Earl of Devon (1276 - 1340) |
| Child | Hugh de Courtenay, 2nd Earl of Devon (1303 - 1377) |
| Child | Sir Thomas Courtenay (1315 - 1356) |
| Father | John de St. John, Lord of Basing ( - 1302) |
| Mother | Living |