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Male Guillaume de Mortimer Click to view Guillaume de Mortimer in the family tree

Guillaume was born in 1248.  Guillaume's father was *Roger de Mortimer and his mother was *Maude de Braose.  His paternal grandparents were *Ralph de Mortimer and Princess *Gwladys verch Llewellyn; his maternal grandparents were *William de Braose and *Eve Marshall. He had three brothers and a sister, named Ralph, *Edmund, Roger and Isobel.  He was the second oldest of the five children.

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