William I, Count of Hainaut
Count of Hainaut
Years: 1286 - 1337
William I, Count of Hainaut (c. 1286 – 7 June 1337) is Count William III of Avesnes, Count William III of Holland and Count William II of Zeeland from 1304 to his death.
William I, Count of Hainaut (c. 1286 – 7 June 1337) is Count William III of Avesnes, Count William III of Holland and Count William II of Zeeland from 1304 to his death.