The article examines some thorny issues related to the biography of Lucius Equitius, a political ally of Lucius Appuleius Saturninus and a plebeian tribune-designate for 99 BC, who claimed to be a son of Tiberius Gracchus. The authors suggest that Equitius, whom ancient sources describe as a man of humble origin, came from the local aristocracy of the city of Firmum, a Latin colony in Picenum (i.e., he was a so-called domi nobilis).