William, Duke of Bavaria (also known as William IV) was a significant historical figure who ruled from 1508 until his death in 1550. He was a member of the House of Wittelsbach and played a crucial role in the political landscape of Bavaria during the early 16th century. His reign was marked by efforts to strengthen the duchy and manage the challenges posed by the Reformation. William was known for his patronage of the arts and education, contributing to the cultural development of Bavaria. He established several institutions, including the University of Ingolstadt, which became an important center for learning. His leadership helped shape the region's identity during a transformative period in European history.