Jean I de Avesnes, Count of Flanders & Hainault
Birth:
Apr 1218
Houffalize, Luxembourg, Belgium
Death:
24 Dec 1257
Valenciennes, Nord, France
Burial:
Valenciennes, Nord, France
FCID:6414:33803
Parents
Father:
Bouchard de Avesnes
Mother:
Marguerite Countess of Flanders and Hainault
Marriage(s)

Aleida, Countess of Holland, Countess of Avesnes
md. Sep 1246
Frankfurt-am-Main, Hessen-Nassau, Prussia, Germany
Children
1.
Living
2.
Living
3.
Boucha ... Avesnes, Bishop of Metz
b. 26 May 1251
4.
Living
5.
Gui ... Avesnes, Bishop of Cambrai
b. 1254
6.
Flor ... Avesnes, Prince of Achaja
b. 1255
7.
Living