text: A holder of this title faced a non-French rebellion from relatives called the War of the Three Henries and attempted to secure the release of the jailed Pope Benedict VI, who was then murdered in prison.
full_question: A holder of this title faced a non-French rebellion from relatives called the War of the Three Henries and attempted to secure the release of the jailed Pope Benedict VI, who was then murdered in prison. Another holder of this title arranged his son’s marriage to princess Theophanu to strengthen ties with the Byzantines. The holder of this title defeated the Magyars at the Battle of Lechfeld and conquered the Kingdom of Italy after working to unify the German tribes. For 10 points, what title taken by Otto the Great was a callback to Charlemagne and refers to an earlier Italian civilization?
first_sentence: A holder of this title faced a non-French rebellion from relatives called the War of the Three Henries and attempted to secure the release of the jailed Pope Benedict VI, who was then murdered in prison.