In the Middle Ages, most of the territory of the Popovo field by the Trebišnjica was part of the župa of Popovo, and was part of the Hum province and form at least 1322 Banate of Bosnia and later Bosnian Kingdom. It encompassed most of the tribal territories of Vlasi Bobani, Vlasi Žurovci, Vlasi Hrabreni and Vlasi Burmazi. On the north it encompassed parts of the Ljubinje area, where it bordered župas Dabar, Ljubinje, Ljubomir and Dubrava. On the south it bordered with Bosansko Primorje county, and Trebinje area with eponymous župa to the east, and Zažabalje to the west. The Bosansko Primorje county was later acquired by the Republic of Ragusa from Bosnian monarch, namely kings Tvrtko II and Ostoja, through sequence of purchase arrangements and contracts.