Nielsen Hayden genealogy
Richard fitz Roy
- Bef 1246(
= Descendancy chart to this point, 
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- 1 Richard fitz Roy [1] d. Bef 24 Jun 1246
- Rohese de Douvres d. Bef 11 Feb 1261
- 2 Isabel fitz Richard [1.1] d. 7 Jul 1276
- Maurice de Berkeley b. 1218 d. 4 Apr 1281
- 3 Thomas de Berkeley [1.1.1] d. 23 Jul 1321
- Joan de Ferrers d. 19 Mar 1310
- 4 Maurice de Berkeley [1.1.1.1] b. Between 1271 and 1281 d. 21 May 1326
[ =>]
- 4 Maurice de Berkeley [1.1.1.1]
- 3 Thomas de Berkeley [1.1.1]
- 2 Richard de Douvres [1.2]
- + Maud of Angus d. 1261
- + Maud of Angus d. 1261
- 2 Lora de Douvres [1.3]
- William Marmion d. Bef 1277
- 3 John Marmion [1.3.1] d. Bef 7 May 1322
- Isabel d. 1314
- 4 John Marmion [1.3.1.1] b. Abt 1292 d. 30 Apr 1335
[ =>]
- 4 John Marmion [1.3.1.1]
- 3 John Marmion [1.3.1]
- 2 Isabel fitz Richard [1.1]