ใครแต่งงานกับWilliam IV, Duke of Bavaria?

William IV (German: Wilhelm IV; 13 November 1493 – 7 March 1550) was 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.

Marie Jakobaea of Baden-Sponheim (25 June 1507 – 16 November 1580) was a German noblewoman and duchess consort of Bavaria.