Furius Camillus, on a day being appointed for his trial, goes into exile.

The Senonian Gauls lay siege to Clusium.

Roman ambassadors, sent to mediate peace between the Clusians and Gauls, are found to take part with the former; in consequence of which the Gauls march directly against Rome, and after defeating the Romans at Allia take possession of the city with the exception of the Capitol.

They scaled the Capitol by night, but are discovered by the cackling of geese, and repulsed, chiefly by the exertions of Marcus Manlius.

The Romans, compelled by famine, agree to ransom themselves.