Corner of the street in Bern. No archaeological evidence that indicates a settlement on the site of today′s city centre prior to the 12th century has been found so far. In antiquity, a Celtic oppidum stood on the Engehalbinsel (peninsula) north of Bern, fortified since the second century BC (late La Tène period), thought to be one of the 12 oppida of the Helvetii mentioned by Caesar. During the Roman era, a Gallo-Roman vicus was on the same site. The Bern zinc tablet has the name Brenodor (“dwelling of Breno”). In the Early Middle Ages, a settlement in Bümpliz, now a city district of Bern, was some 4 km (2 mi) from the medieval city.
The medieval city is a foundation of the Zähringer ruling family, which rose to power in Upper Burgundy in the 12th century. According to 14th-century historiography (Cronica de Berno, 1309), Bern was founded in 1191 by Berthold V, Duke of Zähringen.