Family: Sir John de Courtenay / Isabelle De Vere (fam4288650518)
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 | Baron of Okehampton Robert de Courtenay (1183-1242)
|
 | Mary de Redviers (1196-1242) |
| Hawise de Courtenay (1225- )  |
| Sir John de Courtenay (1224-1274)
|
| Isabelle De Vere (1228-1300) |
| Baron of Okehampton Hugh de Courtenay (1249-1292) |
| John de Courtenay (1251- ) |
| Robert de Courtenay (1253- ) |
| Alice de Courtenay (1255- ) |
| Margaret de Courtenay (1257- ) |
| Aveline de Courtenay (1259- ) |
| Egelina de Courtenay (1261- ) |