| Father | Robert De Courtenay (1170 - 1242) |
| Mother | Mary Redvers (1196 - 1243) |
| Sibling | Sir John De Courtenay Knight (1224 - 1274) |
| Sibling | Hawise De Courtenay (1216 - 1269) |
| Sibling | John "Baron of Okehampton" De Courtenay (1218 - 1274) |
| Sibling | Egeline De Courtenay (1224 - 1297) |
| Sibling | Robert De Courtenay (1228 - 1257) |
| Sibling | William De Courtenay (1220 - ) |
| Sibling | Hugh De Courenay (1224 - ) |
| Sibling | "Sir" William De Musberrie (1226 - ) |
| Sibling | William De Courtnay (1220 - ) |
| Sibling | Hewise De Courtenay (1228 - ) |
| Sibling | Hugh De Courtenay (1234 - ) |