Perugia was an Umbrian settlement but first appears in written history as "Perusia", one of the twelve confederate cities of Etruria. It was first mentioned in Q. Fabius Pictor's account, used by Livy, of the expedition carried out against the Etruscans by Fabius Maximus Rullianus in 310 or 309 BC. At that time, a thirty-year "indutiae" (truce) was agreed upon; however, in 295 BC, Perusia took part in the Third Samnite War and was reduced, with Volsinii and Arretium (Arezzo), to seek for peace in the following year.