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

Jean I De was born in 1228 in Luxembourg,Germany.1   Jean I De's father was Burchard de Avesnes and his mother was Margaret II Cts de Flanders.  His paternal grandparents were Jacques de Avesnes and Adelphie de Guise; his maternal grandparents were Baudouin IX Ct of Flanders and Marie de Champagne. He had a brother and a sister, named Baudouin Count Of and Isabell.  He was the youngest of the three children. He had three half-brothers and two half-sisters, named Guillaume De, Guy de Dampierre Count of, Jean De, Jeanne De and Marie De.  He died in Valenciennes,Nord,France.  He was buried in ,Valenciennes,Nord,France.1 


Jean I De's first family

‌Jean I De were married in a religious ceremony in September 1246 in ,Frankfort Am Main,Hessen-Nassau,Prussia.


Jean I De's second family with Aleida, Countess of Holland

They had two sons named Jean II de and Guy.

1 Pullen010502.FTW
2 Pullen010502.FTW
Further sources/citations:
Ancestral File (R), Ancestral File (TM), Ancestral File (TM)

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