Lucius Tarquinius
In 509 BC, Valerius was one of the leaders of the Roman revolution, together with Lucius Junius Brutus, Lucius Tarquinius Collatinus, and Spurius Lucretius Tricipitinus. Winning over public opinion while the king was campaigning away from the city, they deposed and banished Lucius Tarquinius Superbus, the seventh and last King of Rome. In place of the monarchy, they established a republic, together with the office of consul. Brutus and Collatinus were elected the first consuls.