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Male William deMortaigne Earl of Cornwall Click to view William deMortaigne Earl of Cornwall in the family tree

William deMortaigne Earl of was born in 1058 in Cornwall, England.  William deMortaigne Earl of's father was Earl Robert deMortaigne and his mother was Matilda deMontgomery.  His paternal grandparents were Viscount Herlewine deConteville and Herleva de Falaise; his maternal grandparents were Earl Roger II de Montgomery and Mabel Talvas. He had a brother and a sister, named Richard and Agnes.  He was the second oldest of the three children.  He died at the age of 82 in 1140.


William deMortaigne Earl of's family with Isabel Fitz Richard deClare

They had a son and a daughter, named Aldhelm deBurgo and Beatrice.

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