Nielsen Hayden genealogy
Rohese de Monmouth
1140 - Abt 1180 (~ 45 years)(
= Descendancy chart to this point, 
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- 1 Rohese de Monmouth [1] b. Between 1135 and 1140 d. Abt 1180
- Hugh de Lacy d. 25 Jul 1185
- 2 (Unknown) de Lacy [1.1]
- William Fitz Alan b. Abt 1154 d. 1210
- 3 John Fitz Alan [1.1.1] d. Bef 15 Mar 1240
- Isabel d'Aubigny d. Bef 1240
- 4 John Fitz Alan [1.1.1.1] b. Abt 1223 d. Bef 10 Nov 1267
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- 4 John Fitz Alan [1.1.1.1]
- 3 John Fitz Alan [1.1.1]
- 2 Walter de Lacy [1.2] b. Abt 1172 d. Bef 24 Feb 1240
- Margaret de Briouze b. Abt 1181 d. Aft 25 Jun 1245
- 3 Pernel de Lacy [1.2.1] d. Aft 25 Nov 1288
- Ralph VI de Tony b. Abt 1189 d. Abt 29 Sep 1239
- 4 Margaret de Tony [1.2.1.1]
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- 4 Constance de Toeni [1.2.1.2] b. Between Jul 1233 and Jan 1237 d. 11 Feb 1266
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- 4 Roger V de Tony [1.2.1.3] b. Abt 29 Sep 1235 d. Bef 12 May 1264
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- 4 Margaret de Tony [1.2.1.1]
- 3 Gille de Lacy [1.2.2] d. 1242
- Richard de Burgh b. Abt 1193 d. 1242
- 4 (Unknown) de Burgh [1.2.2.1]
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- 4 Margery de Burgh [1.2.2.2] d. Aft 1 Mar 1253
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- 4 Walter de Burgh [1.2.2.3] b. Abt 1229 d. 28 Jul 1271
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- 4 (Unknown) de Burgh [1.2.2.1]
- 3 Gilbert de Lacy [1.2.3] d. Between 12 Aug 1230 and 15 Dec 1230
- Isabel le Bigod
- 4 Maud de Lacy [1.2.3.1] d. 11 Apr 1303
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- 4 Margaret de Lacy [1.2.3.2] d. 1256
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- 4 Maud de Lacy [1.2.3.1]
- 3 Pernel de Lacy [1.2.1]
- 2 Hugh de Lacy [1.3] b. Abt 1176 d. Bef 26 Dec 1242
- + Emeline de Ridelisford d. Between 18 May 1275 and 19 Jul 1276
- + Lesceline de Verdun
- + Emeline de Ridelisford d. Between 18 May 1275 and 19 Jul 1276
- 2 (Unknown) de Lacy [1.1]