John I, Count of Hainaut

Count of Hainaut from 1246 to 1257 (1218–1257)

Parents

• Bouchard IV of Avesnes
• Margaret II, Countess of Flanders

Children

• Willem van Avesnes
• Guy of Avesnes
• Florent of Hainaut
• Bouchard d'Avesnes
• John I of Hainaut

Siblings

• Jeanne of Dampierre
• William II, Count of Flanders
• Baldwin of Avesnes
• John I of Dampierre
• Guy

Partners

• Adelaide of Holland