sentences:  The town privileges were received in 1282 from the bishops of Lubusz and the first mayor of the town was Dzierżko of Chyciny.Initially, Ośno was owned by the Bishops of Lubusz, and since 1258 by the Brandenburg margraves.After a war broke out over control of the region in 1319, the area came under Polish rule again, as part of the Duchy of Ścinawa.