Henry (Heinrich) I the Fowler (r. 919–936), a Saxon elected at the Reichstag of Fritzlar in 919, designated his son Otto, who was elected King in Aachen in 936, to be his successor. A marriage alliance with the widowed queen of Italy gave Otto control over that nation as well. His later crowning as Emperor Otto I (later called "the Great") in 962 would mark an important step, since from then on the Eastern-Frankish realmand not the West-Frankish kingdom that was the other remainder of the Frankish kingdomswould have the blessing of the Pope. Otto had gained much of his power earlier, when, in 955, the Magyars were defeated in the Battle of Lechfeld.