Brennus
Brennus,
fl. c.389 B.C., legendary Gallic leader. He occupied Rome but failed to take the Capitol from ManliusManlius, ancient Roman gens, chiefly patrician but later containing plebeian families. Marcus Manlius Capitolinus, d. 384? B.C., consul (392 B.C.), took refuge in the Capitol when Rome was taken (c.389) by the Gauls.
..... Click the link for more information. (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.