Nielsen Hayden genealogy
Richard de Clare
Abt 1153 - 1217 (~ 64 years)(
= Descendancy chart to this point, 
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- 1 Richard de Clare [1] b. Abt 1153 d. Between 30 Oct 1217 and 28 Nov 1217
- Amice of Gloucester d. 1 Jan 1225
- 2 Maud de Clare [1.1] d. 1213
- Roger de Lacy b. Abt 1165 d. 1 Oct 1211
- 3 (Unknown daughter of Roger de Lacy) [1.1.1]
- Alan fitz Roland d. Abt 2 Feb 1234
- 4 Helen of Galloway [1.1.1.1] d. Aft 21 Nov 1245
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- 4 Helen of Galloway [1.1.1.1]
- 3 John de Lacy [1.1.2] b. Abt 1192 d. 22 Jul 1240
- Margaret de Quincy b. Bef 1217 d. Bef 30 Mar 1266
- 4 Maud de Lacy [1.1.2.1] d. Bef 10 Mar 1289
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- 4 Edmund de Lacy [1.1.2.2] b. Abt 1230 d. 2 Jun 1258
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- 4 Maud de Lacy [1.1.2.1]
- 3 (Unknown daughter of Roger de Lacy) [1.1.1]
- William de Briouze d. 1210
- 3 Maud de Briouze [1.1.3]
- Henry de Tracy d. Bef 21 Aug 1274
- 4 Eve de Tracy [1.1.3.1] b. Bef 1227 d. Bef 1274
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- 4 Eve de Tracy [1.1.3.1]
- 3 John de Brewes [1.1.4] b. Abt 1197 d. Between 1231 and 1232
- Margaret ferch Llywelyn d. 1265
- 4 William de Brewes [1.1.4.1] b. Abt 1224 d. 6 Jan 1291
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- 4 Richard de Brewes [1.1.4.2] b. Bef 1232 d. Bef 18 Jun 1292
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- 4 William de Brewes [1.1.4.1]
- 3 Maud de Briouze [1.1.3]
- 2 Hawise de Clare [1.2] d. Aft 1234
- Geoffrey de Say b. Abt 1180 d. 19 Aug 1230
- 3 William de Say [1.2.1] d. Bef 12 Feb 1272
- Sibyl
- 4 Hawise de Say [1.2.1.1] d. Aft 1317
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- 4 Agnes de Say [1.2.1.2]
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- 4 William de Say [1.2.1.3] b. 20 Nov 1253 d. Bef 16 Sep 1295
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- 4 Hawise de Say [1.2.1.1]
- 3 William de Say [1.2.1]
- 2 Gilbert de Clare [1.3] b. Abt 1180 d. 25 Oct 1230
- Isabel Marshal b. 9 Oct 1200 d. 17 Jan 1240
- 3 Amice de Clare [1.3.1] b. 27 May 1220 d. Bef 21 Jan 1284
- Baldwin de Revières d. 15 Feb 1245
- 4 Baldwin de Revières [1.3.1.1] b. 1 Jan 1236 d. Bef 13 Sep 1262
- 4 Baldwin de Revières [1.3.1.1]
- 3 Richard de Clare [1.3.2] b. 4 Aug 1222 d. Jul 1262
- + Margaret de Burgh d. Nov 1237
- Maud de Lacy d. Bef 10 Mar 1289
- 4 Thomas de Clare [1.3.2.1] b. Between 1243 and 1248 d. 29 Aug 1287
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- 4 Gilbert de Clare [1.3.2.2] b. 2 Sep 1243 d. 7 Dec 1295
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- 4 Rose de Clare [1.3.2.3] b. 17 Aug 1252 d. Aft 1315
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- 4 Thomas de Clare [1.3.2.1]
- + Margaret de Burgh d. Nov 1237
- 3 Isabel de Clare [1.3.3] b. 2 Nov 1226 d. Aft 10 Jul 1264
- Robert de Brus b. Abt 1220 d. 31 Mar 1295
- 4 Isabel de Brus [1.3.3.1]
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- 4 Robert de Brus [1.3.3.2] b. Jul 1243 d. 4 Apr 1304
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- 4 Isabel de Brus [1.3.3.1]
- 3 Amice de Clare [1.3.1]
- 2 Maud de Clare [1.1]