Human settlements on the river Neretva, between the Hum Hill and the Velež Mountain, have existed since prehistory, as witnessed by discoveries of fortified enceintes and cemeteries. Evidence of Roman occupation was discovered beneath the present town.
As far as medieval Mostar goes, although the Christian basilicas of late antiquity remained in use, few historical sources were preserved and not much is known about this period. The name of Mostar was first mentioned in a document dating from 1474, taking its name from the bridge-keepers (mostari); this refers to the existence of a wooden bridge from the market on the left bank of the river which was used by traders, soldiers, and other travelers. During this time it was also the seat of a kadiluk (district with a regional judge). Since Mostar was on the trade route between the Adriatic and the mineral-rich regions of central Bosnia, the settlement began to spread to the right bank of the river.
However, prior to the 1474 the names of two towns appear in medieval historical sources, along with their later medieval territories and properties – the towns of Nebojša andCimski grad. In the early 15th century the late medieval county of Večenike covered the site of the present-day Mostar along the right bank of the Neretva: Zahum, Cim, Ilići,Hraštani and Vojno. It was at the center of this area, which in 1408 belonged to the Radivojević's, that Cim fort was built (prior to 1443). Mostar is indirectly referred to in a charter of King Alfonso V of Aragon dating from 1454 as Pons (Bridge), for a bridge had already been built there. Prior to 1444, the Nebojša fort was built on the left bank of the Neretva, which belonged to the late medieval county still known as Večenike or Večerić. The earliest documentary reference to Mostar as a settlement dates from April 3, 1452, when natives of Dubrovnik wrote to their fellow countrymen in the service of Đorđe Branković to say that Vladislav Hercegović
