Otto I, Holy Roman Emperor started the Hungarian invasions.
 With preparations completed, Otto left his heir in William's custody and led his army into northern Italy via Strasbourg and Chur
 Though Liudolf, Duke of Swabia, and Conrad, Duke of Lorraine, had successfully prevented the Hungarians from invading their own territories in the west, the invaders managed to reach the Rhine River, sacking much of Bavaria and Franconia in the process

