Nielsen Hayden genealogy
Robert de Thweng
Bef 1145 - Bef 1199 (< 54 years)(
= Descendancy chart to this point, 
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- 1 Robert de Thweng [1] b. Bef 1145 d. Bef 1199
- Emma Darel d. Aft 1203
- 2 Marmaduke de Thweng [1.1] b. Bef 1178 d. Abt 1230
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- 3 Robert de Thweng [1.1.1] d. Between 1245 and 1257
- Maud de Kilton
- 4 Marmaduke de Thweng [1.1.1.1] d. Between 1282 and 1284
[ =>]
- 4 Marmaduke de Thweng [1.1.1.1]
- 3 Robert de Thweng [1.1.1]
- 2 Marmaduke de Thweng [1.1]