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Male Marmaduke De Thweng Click to view Marmaduke De Thweng in the family tree

Marmaduke was born in Kilton, , Yorkshire, England.  He died in 1322 in Kilton, North Riding, Yorkshire, England.

Marmaduke's family with Isabel De Ros

‌Marmaduke and Isabel were married in a religious ceremony in 1273 in Kilton, North Riding, Yorkshire, England.  They had a daughter named Lucia.

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