Enrique III el Negro
The Imperial crown once held by the Carolingian emperors was disputed between their fractured heirs and local overlords; none emerged victorious until Otto I, Holy Roman Emperor invaded Italy. Italy became a constituent kingdom of the Holy Roman Empire in 962, from which point the emperors were German. As emperors consolidated their position, northern Italian city-states would become divided by Guelphs and Ghibellines. Henry III, Holy Roman Emperor found three rival popes when he visited Rome in 1048 because of the unprecedented actions of Pope Benedict IX. He deposed all three and installed his own preferred candidate: Pope Clement II.