Sir Robert de Thweng 
Robert was born in 1153 in Helmsley, Yorkshire, England. Robert's father is Robert de Thweng. His paternal grandparents are Pagan FitzWalter de Thweng and Fossard. He is an only child.
He had a biological son named Marmaduke.
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Children
Marmaduke de Thweng
Marmaduke was born in 1180 in Helmsley, Yorkshire, England. He died at the age of 54 in 1234.
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