Lugdunum Convenarum

Lugdunum Convenarum was a Roman town in the central Pyrenees, on the site of modern Saint-Bertrand-de-Comminges in the Haute-Garonne department of southern France. It was the capital of the Convenae, an Aquitanian people of the upper Garonne valley. According to Jerome, the town began as an oppidum into which Pompey gathered the Convenae in 72 or 71 BC, at the close of the Sertorian War. It was reorganised under Augustus as the centre of the new civitas, and over the following centuries it acquired the public buildings of a provincial capital, among them a forum, public baths, a theatre and a macellum.

The town was prosperous into the 4th century. In late antiquity it was the seat of a bishopric, and it was gradually abandoned in the early Middle Ages, after which occupation contracted to the fortified hill of the upper town, the site of the later cathedral.