In 390 BC, the Gauls moved in the direction of Rome, the capital of the Roman Republic. According to Roman folklore, a Roman named Caedicius kept hearing a disembodied nocturnal voice at the base of the Palatine hill in the Roman Forum. The voice warned Caedicius of the oncoming attack and recommended that the walls of Rome be fortified. The authorities did not believe his story and the Gauls entered the city without difficulty and burned it. The Romans eventually drove the Gauls away.
An altar inscribed si deus si dea has been misidentified at times as the "Ara Aius Locutius", mentioned in some Roman texts. In reality the divinity for which the altar was constructed is unknown.