William I, Duke of Bavaria

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William I
Duke of Bavaria
Portrait by Willem Thibaut
Born	12 May 1330 Frankfurt, Holy Roman Empire
Died	15 April 1389 (aged 58) Le Quesnoy
Spouse	Maud, Countess of Leicester
House	Wittelsbach
Father	Louis IV, Holy Roman Emperor
Mother	Margaret II, Countess of Hainaut

William I, Duke of Bavaria-Straubing (Frankfurt am Main, 12 May 1330 – 15 April 1389,^[1] Le Quesnoy), was the second son of Emperor Louis IV and Margaret II of Hainaut. He was also known as William V, Count of Holland, as William III, Count of Hainaut and as William IV, Count of Zeeland.