Lucius Appuleius Saturninus
Caepio served as quaestor in 103 or possibly 100. Previously his father had been tried before the people by the tribune Gaius Norbanus for his catastrophic loss at the Battle of Arausio; he was convicted and banished. In his quaestorship the younger Caepio used violence to oppose Lucius Appuleius Saturninus, a tribune of the plebs and a political ally of Norbanus, in Saturninus' attempt to pass a bill to sell grain at a deeply discounted price to the Roman people. In his role as he issued coins with the inscription ('for the purchase of grain by order of the senate'), implying senate sponsorship of the grain law. Caepio was later brought to trial around 95 BC on "maiestas" charges from actions as quaestor, but – defended by Lucius Licinius Crassus – he was acquitted.