Nielsen Hayden genealogy
Isabel Marshal
1200 - 1240 (39 years)(
= Descendancy chart to this point, 
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- 1 Isabel Marshal [1] b. 9 Oct 1200 d. 17 Jan 1240
- Gilbert de Clare b. Abt 1180 d. 25 Oct 1230
- 2 Amice de Clare [1.1] b. 27 May 1220 d. Bef 21 Jan 1284
- Baldwin de Revières d. 15 Feb 1245
- 3 Baldwin de Revières [1.1.1] b. 1 Jan 1236 d. Bef 13 Sep 1262
- + Margaret of Savoy d. Bef 14 May 1292
- + Margaret of Savoy d. Bef 14 May 1292
- 3 Baldwin de Revières [1.1.1]
- 2 Richard de Clare [1.2] b. 4 Aug 1222 d. Jul 1262
- + Margaret de Burgh d. Nov 1237
- Maud de Lacy d. 1288-1289
- 3 Thomas de Clare [1.2.1] b. Between 1243 and 1248 d. 29 Aug 1287
- Juliane fitz Maurice d. Bef 24 Sep 1300
- 4 Maud de Clare [1.2.1.1] d. 1 Feb 1325
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- 4 Margaret de Clare [1.2.1.2] b. Between 1286 and 1287 d. 1333
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- 4 Maud de Clare [1.2.1.1]
- 3 Gilbert de Clare [1.2.2] b. 2 Sep 1243 d. 7 Dec 1295
- + Alice de Lusignan b. Aft Oct 1236 d. May 1290
- Joan of Acre b. 1272 d. 23 Apr 1307
- 4 Margaret de Clare [1.2.2.1] b. Abt 1292 d. 9 Apr 1342
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- 4 Eleanor de Clare [1.2.2.2] b. Oct 1292 d. 30 Jun 1337
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- 4 Elizabeth de Clare [1.2.2.3] b. Nov 1295 d. 4 Nov 1360
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- 4 Margaret de Clare [1.2.2.1]
- + Alice de Lusignan b. Aft Oct 1236 d. May 1290
- 3 Rose de Clare [1.2.3] b. 17 Aug 1252 d. Aft 1315
- Roger de Mowbray b. Abt 1257 d. 1296
- 4 John de Mowbray [1.2.3.1] b. 4 Sep 1286 d. 23 Mar 1322
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- 4 John de Mowbray [1.2.3.1]
- 3 Thomas de Clare [1.2.1]
- + Margaret de Burgh d. Nov 1237
- 2 Isabel de Clare [1.3] b. 2 Nov 1226 d. Aft 10 Jul 1264
- Robert de Brus b. Abt 1220 d. 31 Mar 1295
- 3 Isabel de Brus [1.3.1]
- John fitz Marmaduke d. Bef 16 Aug 1311
- 4 Mary Fitz Marmaduke [1.3.1.1] d. Aft 1318
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- 4 Mary Fitz Marmaduke [1.3.1.1]
- 3 Robert de Brus [1.3.2] b. Jul 1243 d. 4 Apr 1304
- Marjory of Carrick b. Abt 1252 d. Bef Nov 1292
- 4 Maud Bruce [1.3.2.1] d. Aft Sep 1323
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- 4 Robert de Brus, King of Scotland [1.3.2.2] b. 11 Jul 1274 d. 7 Jun 1329
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- 4 Maud Bruce [1.3.2.1]
- 3 Isabel de Brus [1.3.1]
- 2 Amice de Clare [1.1]
- + Richard of Cornwall, King of the Romans b. 5 Jan 1209 d. 2 Apr 1272