William De Vernon (5th Earl of Devon) De Reviers
- 1217Drag or scroll to see more of the chart.
| Hugh (Sir) (of Okehampton) De Courtenay | |
| D: | 28 Feb 1290-1291 |
 | Eleanor Le Despenser -Aft 1315 |
| Eleanor Le Despenser | |
| D: | Aft Mar 1315 |
| John (Lord Okehampton) De Courtenay | |
| D: | 3 May 1274 |
| Isabel De Vere -Yes, date unknown |
| Isabel De Vere | |
| D: | Yes, date unknown |
| Mary De Reviers -Yes, date unknown |
| Mary De Reviers | |
| D: | Yes, date unknown |
| Robert De Courtenay -1242 |
| Robert De Courtenay | |
| D: | 26 Jul 1242 |
| Baldwin (7Th Earl of Devon) De Reviers 1235-1262 |
| Baldwin (7Th Earl of Devon) De Reviers | |
| B: | 1 Jan 1234-1235 |
| D: | 1262 |
| Dsps | |
| Isabella (Countess of Devon) De Redvers 1237-1293 |
| Isabella (Countess of Devon) De Redvers | |
| B: | Jul 1237 |
| D: | 10 Nov 1293 |
| Dsps | |
| William III (Count \Earl of Albermarle) De Froz Bef 1216-1260 |
| William III (Count \Earl of Albermarle) De Froz | |
| B: | Bef Dec 1216 |
| M: | 1248 |
| D: | 23 May 1260 |
| Amiens | |
| Baldwin (6th Earl of Devon) De Reviers Abt 1217-Yes, date unknown |
| Baldwin (6th Earl of Devon) De Reviers | |
| B: | Abt 1217 |
| D: | Yes, date unknown |
| Amicia De Clare 1220-1284 |
| Amicia De Clare | |
| B: | 27 May 1220 |
| M: | 1226 |
| D: | 21 Jan 1283-1284 |
| Baldwin De Reviers Aft 1200-1216 |
| Baldwin De Reviers | |
| B: | Aft 28 Apr 1200 |
| D: | 1 Sep 1216 |
| Margaret Fitzgerold -1252 |
| Margaret Fitzgerold | |
| D: | 29 Sep 1252 |
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| William De Vernon (5th Earl of Devon) De Reviers | |
| D: | 8 Sep 1217 |
| Mabirie De Dunstanville -Yes, date unknown |
| Mabirie De Dunstanville | |
| D: | Yes, date unknown |