Brutus, Lucius Junius. A Roman consul. Tarquinius Superbus, having put the father and brother of Brutus to death, Brutus feigned madness until the rape of Lucretia, when he excited the populace to insurrection, and drove Tarquinius from the city. He and Collatinus were appointed consuls together, and in this capacity Brutus ordered the execution of his own sons for complicity in a conspiracy. He was killed by Tarquinius' son about 507 B.C.