In the 3rd century BC a small Etruscan village stood on the site of San Gimignano. Chroniclers Lupi, Coppi and Pecori relate that during the Catiline conspiracy against the Roman Republic in the 1st century, two patrician brothers, Muzio and Silvio, fled Rome for Valdelsa and built two castles, Mucchio and Silvia (now San Gimignano). The name of Silvia was changed to San Gimignano in 450 AD after Bishop Geminianus, the Saint of Modena, intervened to spare the castle from destruction by the followers of Attila the Hun. As a result, a church was dedicated to the saint, and in the 6th and 7th centuries a walled village grew up around it, subsequently called the "Castle of San Gimignano" or Castle of the Forest because of the extensive woodland surrounding it. From 929 the town was ruled by the bishops of Volterra.