a famous general of the Senonian Gauls, who, in B.C. 390, overrun Italy with a powerful army, defeated the Romans at the river Allia, and sacked Rome. After blockading the capitol for six months, Brennus was bribed by a thousand pounds weight of gold to depart from the city. In the popular legends it was related, that while the gold was weighing, Camillus suddenly appeared with an army, and slew Brennus and his followers to a man. See Roman History.

There was another Gallic leader of this name who invaded Macedonia and Greece about B.C. 280. After sustaining a severe defeat near Delphi, he put an end to his own life.