Jean Ier d'Avesnes
comte de Hainaut
TENUI MODULATUR AVENA
- Born in Houffalize
- Deceased in Valenciennes
Parents
- Bouchard d'Avesnes (1182 - 1244), seigneur d'Avesnes
- Marguerite de Hainaut, Marguerite de Constantinople (1202 - 1280), comtesse de Flandre
Family
- Married with Adélaïde de Hollande, issuing