William I De Say
- 1144(
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- 1 William I De Say [1] d. Aug 1144
- Beatrice De Mandeville d. Bef 19 Apr 1197
- 2 William II De Say [1.1] d. 1 Aug 1117
- Aufrica of Scotland d. Yes, date unknown
- 3 Beatrice De Say [1.1.1] d. Bef 19 Apr 1197
- Geoffrey (4th Earl of Essex) Fitzpiers d. 14 Oct 1213
- 4 Maud (Countess of Essex) De Mandeville [1.1.1.1] d. 27 Aug 1236
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- 4 Henry (Dean of Wolverhampton) De Mandeville [1.1.1.2] d. Yes, date unknown
- 4 Geoffrey (4th Earl of Essex) De Mandeville [1.1.1.3] d. 12 May 1243
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- 4 Maud (Countess of Essex) De Mandeville [1.1.1.1]
- 3 Maud De Say [1.1.2] d. Yes, date unknown
- 3 Beatrice De Say [1.1.1]
- 2 Geoffery I De Say [1.2] b. Abt 1135 d. 19 May 1214
- Alice Maminot b. Abt 1123 d. Bef 1199
- 3 William De Say [1.2.1]
- 3 Geoffery II De Say [1.2.2] b. Abt 1155 d. 1230
- Alice De Cheney De Caisneto d. Yes, date unknown
- 4 William III De Say [1.2.2.1] d. Bef 12 Feb 1272
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- 4 William III De Say [1.2.2.1]
- + Margery Briwerre d. Yes, date unknown
- 3 William De Say [1.2.1]
- Alice De Vere d. 28 Oct 1217
- 3 Geoffrey De Say [1.2.3]
- 3 Geoffrey De Say [1.2.3]
- 2 William II De Say [1.1]