George, Duke of Brunswick-Lüneburg (1470-1539), was a significant German nobleman during the late Middle Ages. He ruled over the duchy of Brunswick-Lüneburg, which was part of the Holy Roman Empire. His reign was marked by efforts to strengthen his territory and maintain its independence amid the political complexities of the time. As a member of the House of Welf, George played a crucial role in the regional power dynamics. He was known for his military leadership and involvement in various conflicts, including the Schmalkaldic War, which was a struggle between Protestant and Catholic states in the Empire.