Duke Henry IV of Luxembourg was a nobleman from the House of Luxembourg, born around 1290. He was the son of Henry III, Duke of Luxembourg and Margaret of Brabant. Henry IV played a significant role in the politics of the Holy Roman Empire during the early 14th century, often engaging in conflicts over territorial claims and alliances. Henry IV became Duke of Luxembourg in 1346 and was known for his efforts to strengthen the duchy. He was also involved in the Hundred Years' War and had connections with various European powers, including France and England, which influenced his political maneuvers.