 He succeeded his grandfather, John II, in 1324, but his mother Loretta acted as his regent until his coming of age in 1331.In 1331 he married Mechthild of the Electorate of the Palatinate, a niece of Ludwig der Bayer.During his reign, several important events occurred, such as the construction of the Heilig-Geist-Hospital in Enkirch and a war with the Archbishop of Trier, Boemund II of Saarbrücken, which caused high death tolls on both sides.