Claim: Vindicius discovered papers exposing Tarquin's plot to regain power, he gave these papers to Publius Valerius Publicola and he was a Roman slave.
Evidence: Vindicius was a Roman slave. He was said to be the person who discovered papers exposing Tarquin's plot to regain power, after the overthrowal of the Roman Monarchy. Vindicius gave these papers to Publius Valerius Publicola on account of the "affable and kindly ways of the man."