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Male Marmaduke 1st Baron de Thweng , of Kilton Click to view Marmaduke 1st Baron de Thweng , of Kilton in the family tree

Marmaduke 1st Baron de was born in September 1256 in Kilton Castle, Cleveland, Yorkshire, England.  Marmaduke 1st Baron de's father was Marmaduke de Thweng , Lord of Kilton, MP, Sir and his mother was Lucy de Brus.  His paternal grandparents were Robert de Thweng , Lord of Kilton, Sir Knight and Maud Heiress of Kilton; his maternal grandparents were Peter II de Brus , Baron of Skelton & Danby and Hawise de Lancaster. He had two brothers named Robert de and John.  He was the second oldest of the three children.  He died at the age of 66 on September 28th, 1322.


Marmaduke 1st Baron de's family with Isabel de Ros

They had three daughters named Alice de, Lucy de and Katherine de.

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