Count Henry I of Luxembourg was a nobleman who lived during the 10th century. He is known for being one of the early rulers of the County of Luxembourg, which later became an important territory in Europe. His reign marked the beginning of the House of Luxembourg, a significant dynasty in medieval history. Henry I was the son of Sigefroid, the first Count of Luxembourg. He played a crucial role in establishing the region's political structure and expanding its influence. His descendants would go on to hold important titles, including the Holy Roman Emperor, further shaping European history.