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Male Jean I De Dampierre Click to view Jean I De Dampierre in the family tree

Jean I was born in 1267.  Jean I's father was Guy De Dampierre and his mother was Isabelle De Luxembourg.  His paternal grandparents were Guillaume II De Dampierre and Countess Of Flanders & Hainault Marguerite; his maternal grandparents were Henri and Marguerite De Bar. He had two sisters named Marguerite and Isabel.  He was the second oldest of the three children. He had two half-brothers named Robert III and Guillaume IV.

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