A Boundary Stone From Beočin Reconsidered

The aim of this paper would be to re-examine one epigraphic monument from the territory of Sirmium, one of the most important and prosperous towns of Roman Pannonia. The slab which marked the boundary of the estate of Tiberius Claudius Priscus, prefect of the ala I civium Romanorum, was found in Beočin, in the north-eastern part of the Sirmian territory. It contains valuable information on the topography and history of Sirmium and south-eastern Pannonia. It reveals the indigenous name of a vicus in the town’s territory. The village of Iosista was probably situated east of Beočin, on the site Marin Do. The boundary stone sheds some light on the military history of Pannonia. Its find spot implies that the fortress of the ala I civium Romanorum was located on the Sirmian section of the Danubian limes. The unit’s commander Tiberius Claudius Priscus might be identified with a homonymous equestrian officer from Ephesus in the province of Asia. The prefecture in the ala I civium Romanorum would be his militia tertia.