Nielsen Hayden genealogy
Robert de Thweng
- 1257(
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- 1 Robert de Thweng [1] d. Between 1245 and 1257
- Maud de Kilton
- 2 Marmaduke de Thweng [1.1] d. Between 1282 and 1284
- Lucy de Brus d. Aft 29 Mar 1282
- 3 Marmaduke de Thweng [1.1.1] d. Bef 26 Feb 1323
- Isabel de Ros d. 1309
- 4 Katherine de Thweng [1.1.1.1] d. Between 20 Apr 1364 and 28 May 1374
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- 4 Lucy de Thweng [1.1.1.2] b. Abt 1290 d. Bef 1325
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- 4 Katherine de Thweng [1.1.1.1]
- 3 Robert de Thweng [1.1.2] d. Bef 1285
- Alice de Merlay b. Abt 1258 d. Bef 7 Feb 1268
- 4 Lucy de Thweng [1.1.2.1] d. 8 Jun 1346
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- 4 Lucy de Thweng [1.1.2.1]
- 3 Marmaduke de Thweng [1.1.1]
- 2 Marmaduke de Thweng [1.1]