Brennus, fl. c.389 B.C., legendary Gallic leader. He occupied Rome but failed to take the Capitol from Manlius (Marcus Manlius Capitolinus). According to legend, when the tribute that the Romans had agreed to pay was being weighed, a Roman complained, whereupon Brennus threw his sword on the scale, crying,"Vae victis!" [woe to the vanquished]. His historical existence is dubious.
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