The House of Jülich was a noble family in the Holy Roman Empire, originating from the region of Jülich in present-day Germany. It played a significant role in the politics of the region during the late Middle Ages and the Renaissance, particularly in the Duchy of Jülich and surrounding territories. The family produced several notable rulers, including Duke William IV of Jülich, who expanded their influence through strategic marriages and alliances. The House of Jülich eventually merged with other noble houses, such as the House of Cleves, contributing to the complex political landscape of the time.