William I, Count of Hainaut
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William the Good was count of Hainaut, Avesnes, Holland, and Zeeland from 1304 to his death. Wikipedia
Born: 1286
Died: June 7, 1337 (age 51 years), Valenciennes, France
Grandchildren: William I, Duke of Bavaria, Albert I, Duke of Bavaria, Edward the Black Prince, and more
Grandparents: John I, Count of Hainaut, Adelaide of Holland, Henry V, Count of Luxembourg, and more
Parents: John II, Count of Holland and Philippa of Luxembourg
Spouse: Joan of Valois, Countess of Hainaut (m. 1305)