Mary De Reviers
- Yes, date unknownDrag or scroll to see more of the chart.
| Eleanor De Courtenay | |
| D: | Yes, date unknown |
| Henry (1st Lord Grey of Condor) De Grey | |
| D: | 1308 |
| Hugh (Earl of Devon) De Courtenay | |
| B: | 1274 |
| D: | 23 Dec 1340 |
| Agnes De St John | |
| D: | 11 Jun 1345 |
| Margaret De Courtenay | |
| D: | Yes, date unknown |
| Nicholas (2nd Lord Moels) De Moels | |
| M: | Bef Feb 1312 |
| D: | Bef 29 Jan 1315 |
| Dsp | |
| Isabel (of Okehampton) Courtenay | |
| D: | Yes, date unknown |
| John (of Basing 1st Lord) De St John | |
| B: | Abt 1273 |
| M: | Bef 1308 |
| D: | Bef 4 Apr 1329 |
| Hugh (Sir) (of Okehampton) De Courtenay | |
| D: | 28 Feb 1290-1291 |
| Eleanor Le Despenser | |
| D: | Aft Mar 1315 |
| John (Lord Okehampton) De Courtenay | |
| D: | 3 May 1274 |
| Isabel De Vere | |
| D: | Yes, date unknown |
|
| Mary De Reviers | |
| D: | Yes, date unknown |
| Robert De Courtenay | |
| D: | 26 Jul 1242 |