Battle of Lechfeld
At the beginning of the 10th century, the region was raided by Magyars. They were defeated in the Battle of Lechfeld (955) and gradual German reconquest of the region began. By 972, newly retaken frontier regions along the river Danube were reorganized into a frontier county (margraviate) that became known as the Bavarian "Eastern March" () or "Ostarrichi" (). First known margrave was Burkhard, who is mentioned in sources since 972.