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Male Martin "the Humane" Click to view Martin "the Humane" in the family tree

Martin "the was born about 1356.  Martin "the's father was Peter IV "the Ceremonius" and his mother was Leonor of Portugal.  His paternal grandparents were Alfonso IV "the Benign" and Leonor of Castile; his maternal grandparents were Afonso IV 'O Osado' and Infanta of Castile Beatrix. He had a brother and two sisters, named John I "the Hunter" of, Constanza of and Eleanor of.

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