William De Vernon (5th Earl of Devon) De Reviers
- 1217
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- 1 William De Vernon (5th Earl of Devon) De Reviers [1] d. 8 Sep 1217
- Mabirie De Dunstanville d. Yes, date unknown
- 2 Mary De Reviers [1.1] d. Yes, date unknown
- Robert De Courtenay d. 26 Jul 1242
- 3 John (Lord Okehampton) De Courtenay [1.1.1] d. 3 May 1274
- Isabel De Vere d. Yes, date unknown
- 4 Hugh (Sir) (of Okehampton) De Courtenay [1.1.1.1] d. 28 Feb 1290-1291
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- 4 Hugh (Sir) (of Okehampton) De Courtenay [1.1.1.1]
- 3 John (Lord Okehampton) De Courtenay [1.1.1]
- 2 Baldwin De Reviers [1.2] b. Aft 28 Apr 1200 d. 1 Sep 1216
- Margaret Fitzgerold d. 29 Sep 1252
- 3 Baldwin (6th Earl of Devon) De Reviers [1.2.1] b. Abt 1217 d. Yes, date unknown
- Amicia De Clare b. 27 May 1220 d. 21 Jan 1283-1284
- 4 Baldwin (7Th Earl of Devon) De Reviers [1.2.1.1] b. 1 Jan 1234-1235 d. 1262
- 4 Isabella (Countess of Devon) De Redvers [1.2.1.2] b. Jul 1237 d. 10 Nov 1293
- 4 Baldwin (7Th Earl of Devon) De Reviers [1.2.1.1]
- 3 Baldwin (6th Earl of Devon) De Reviers [1.2.1]
- 2 Mary De Reviers [1.1]