William I, Duke of Bavaria

William I
Duke of Bavaria
Portrait by Willem Thibaut
Born12 May 1330
Frankfurt, Holy Roman Empire
Died15 April 1389 (aged 58)
Le Quesnoy
SpouseMaud, Countess of Leicester
HouseWittelsbach
FatherLouis IV, Holy Roman Emperor
MotherMargaret 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.