William IV, Duke of Bavaria
Duke of Bavaria
Years: 1493 - 1550
William IV (German: Wilhelm IV; 13 November 1493 – 7 March 1550) is Duke of Bavaria from 1508 to 1550, until 1545 together with his younger brother Louis X, Duke of Bavaria.
He was born in Munich to Albert IV and Kunigunde of Austria, a daughter of Emperor Frederick III.
