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Male Jean de Avesnes Ct de Flanders Click to view Jean de Avesnes Ct de Flanders in the family tree

Jean de Avesnes was born in 1218 in Etroeungt, Nord, France.  Jean de Avesnes' father was Burchard de Avesnes and his mother was Margaret I de Flanders Cts de Flanders.  His paternal grandparents were Jacques de Avesnes and Adelphie de Guise; his maternal grandparents were Baudouin IX de Flanders Ct de Flanders and Marie de Champagne.  He was an only child.  He died at the age of 39 on December 24th, 1257 in Valenciennes, Nord, France.

Jean de Avesnes' family with Aleidis Cts de Hainault

‌Jean de Avesnes and Aleidis were married in a religious ceremony in 1246.  They had a son named Jan II de Hainault.

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