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Male William De Mortimer Click to view William De Mortimer in the family tree

William was born about 1277 in Bridgewater, England.  William's father was Edmund De Mortimer and his mother was Margaret Eleanor de Fiennes.  His paternal grandparents were Roger De Mortimer and Maud De Braiose; his maternal grandparents were William II de Fiennes and Blanche de Brienne. He had five brothers and five sisters, named Roger, Hugh, Walter, Edmund, John, Isolte, Maud, Alianore, Joan and Elizabeth.  He was the second oldest of the eleven children.


William's family with Hawise de Muscegros


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