 The Banate of Macsó was ruled by several powerful bans.In the 13th century, Béla of Macsó (grandson of Hungarian king Béla IV and son of Rostislav Mikhailovich) ruled the Banate of Macsó as well as Usora and Soli (areas across Drina river in today's northeastern Bosnia).Macsó soon become apple of discord between the Kingdom of Hungary and the Kingdom of Serbia.