From BiblePortal Wikipedia

Pannonia [1]

A province of the Roman empire, conquered between 35 B.C. and A.D. 8; occupied a square with the Danube on the N. and E. and the Save almost on the S. border; it passed to the Eastern Empire in the 5th century, fell under Charlemagne's sway, and was conquered by the modern Hungarians shortly before A.D. 1000.