Duke William II of Jülich was a nobleman who ruled the Duchy of Jülich in the late 15th century. He was born around 1467 and became Duke in 1511, known for his efforts to strengthen his territory and maintain its independence. His reign was marked by political alliances and conflicts with neighboring regions. William II was also a member of the House of Jülich, a prominent noble family in the Holy Roman Empire. He played a significant role in the politics of the time, navigating relationships with other rulers and engaging in military campaigns to protect his duchy. He died in 1539, leaving a legacy of governance and territorial management.