Nielsen Hayden genealogy
Robert de Ros
- Bef 1269(
= Descendancy chart to this point, 
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- 1 Robert de Ros [1] d. Bef Nov 1269
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- 2 Robert de Ros [1.1] d. Bef 20 Apr 1274
- Margaret de Brus d. Bef 30 Jan 1307
- 3 Robert de Ros [1.1.1] b. Abt 1272 d. Aft 1295
- Lora
- 4 Margaret de Ros [1.1.1.1] b. Abt 1292 d. Aft 26 Dec 1321
[ =>]
- 4 Margaret de Ros [1.1.1.1]
- 3 Robert de Ros [1.1.1]
- 2 Isabel de Ros [1.2] d. Bef 7 May 1275
- Roger de Merlay d. Bef 4 Dec 1265
- 3 Isabel de Merlay [1.2.1] b. Abt 1256 d. Aft Jun 1303
- Robert de Somerville d. Bef 17 Oct 1297
- 4 Joan de Somerville [1.2.1.1]
[ =>]
- 4 Philip de Somerville [1.2.1.2] b. Abt 1287 d. 23 Jan 1355
[ =>]
- 4 Joan de Somerville [1.2.1.1]
- 3 Alice de Merlay [1.2.2] b. Abt 1258 d. Bef 7 Feb 1268
- Robert de Thweng d. Bef 1285
- 4 Lucy de Thweng [1.2.2.1] d. 8 Jun 1346
[ =>]
- 4 Lucy de Thweng [1.2.2.1]
- 3 Isabel de Merlay [1.2.1]
- 2 Robert de Ros [1.1]