Sir Marmaduke DE THWENG(1229 - 1284) Sir William DE ROS(1232 - May 1310)
Lucy DE BRUS(1227 - aft 1282) Eustache FITZHUGH(1244 - 1309)
Sir Marmaduke DE THWENG Isabel DE ROS
b. 1254, Kilton Castle, Yorkshire
d. 1323, Kilton Castle, Yorkshire
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b. 1269, Ingmanthorpe, Yorkshire
d. 1309, Kilton Castle, Yorkshire
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Children
> Lucy DE THWENG(1295 - 1315)