| Father | Hugh De Courtenay (1250 - 1291) |
| Mother | Alianore Le Despencer (1249 - 1328) |
| Sibling | Margaret De Courtenay (1265 - 1349) |
| Sibling | Hugh De Courtney Jr. (1266 - ) |
| Sibling | Hugh De Courtenay Earl of Devonshire (1275 - 1340) |
| Sibling | Isabel De Courtenay (1283 - 1325) |
| Sibling | John De Courtenay (1283 - ) |
| Sibling | Philip Le Courtenay (1277 - 1314) |
| Sibling | Thomas Courtenay (1281 - ) |
| Sibling | Thomas De Courtney (1278 - ) |
| Sibling | Alice De Courtenay (1289 - ) |
| Sibling | Robert De Courtenay (1285 - ) |
| Sibling | Robert De Courtenay (1287 - ) |
| Sibling | Ezeline (1284 - ) |
| Sibling | Alice Courtenay (1279 - ) |
| Sibling | Thomas De Courtenay (1278 - ) |
| Sibling | Alice De Courtenay (1267 - ) |
| Sibling | Isabel De Courtenay (1289 - 1325) |
| Sibling | John De Courtenay (1283 - ) |
| Sibling | Eleanor Courtenay (1265 - 1301) |
| Sibling | Egeline De Courtenay (1289 - 1335) |