1336 to William II of Hainaut (1307-1345) and Johanna van Brabant (1322-1406) and died before 1345 of unspecified causes. Notable ancestors include Henry II of England (1133-1189), William I of England (1027-1087), Charlemagne (747-814), Hugh Capet (c940-996), Alfred the Great (849-899), Rurik (c832-879). Ancestors are from the United Kingdom, Spain, France, Germany, Portugal, Belgium, Netherlands, Russia, Ukraine, Hungary, Belarus, England, the Byzantine Empire, Italy, Turkey.William d'Avesnes was born after
William would have been very powerful as Duke of Brabant, Lothier, and Limburg and Count of Hainaut, Holland, and Zeeland. He died young, however.
Namesakes of William of Avesnes (aft1336-bef1345)