Eberhard of Franconia attempted to depose this man and replace him with Thankmar (tahnk-mahr), but this man defeated Eberhard and his allies at the battle of Andernach.
Eberhard of Franconia attempted to depose this man and replace him with Thankmar (tahnk-mahr), but this man defeated Eberhard and his allies at the battle of Andernach. He also invaded Italy after his son and brother attempted to do so, and he married the woman who was held captive by Berengar, Adelaide. He divested Liudolf and Conrad the Red of their titles at the Diet of Auerstadt. He established his capital at Magdeburg, though he is better known for defeating the Magyars at the Battle of Lechfeld. For 10 points, identify this son of Henry the Fowler, who was crowned Holy Roman Emperor in 962. 
Eberhard of Franconia attempted to depose this man and replace him with Thankmar (tahnk-mahr), but this man defeated Eberhard and his allies at the battle of Andernach.
Otto the Great or Otto I