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Male Baldwin I De Boulogne Click to view Baldwin I De Boulogne in the family tree

Baldwin I's father was Eustace of Bologne and his mother was Ida Von Nieder-Lothringen.  His paternal grandparents were Eustace I de Boulogne and Mahaut (Maud) de Louvain; his maternal grandparents were Godfrey II 'The Bearded' of Lorraine and Doda or Ode. He had two brothers and a sister, named Godefroi, Eustace III and Ida. He had a half-sister named Daughter.  He died in 1118.

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