 Livy and Plutarch say that the Senones marched to Rome to exact retribution for this.It is possible that the entire story of the events at Clusium is fiction, as Clusium had no real reason to appeal to Rome for help, and the Gauls needed no real provocation to sack Rome.The story, it is hypothesized, exists to provide an explanation for an otherwise unmotivated attack on Rome, and to depict Rome as a bulwark of Italy against the Gauls.