Marmaduke De+ Thweng 
He had a biological son named Robert De+.
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Personal Details
Marmaduke De+ Thweng
Marmaduke De+ was born before 1178 in Legsby, Caistor, Lincolnshire, England. He died after November 23rd, 1234 in Lund, Beverley, East Riding Yorkshire, England.
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Children
Robert De+ Thweng
Robert De+ was born about 1214 in Thweng, Bridlington, East Riding Yorkshire, England. He died after 1256 in Kilton Castle, Cleveland, Yorkshire, England.