c. 84 BC–after 4 AD. From Velia; served on Julius Caesar's staff in Gaul; later prominent at Rome. Wrote in Latin. A jurist recommended to Caesar by Cicero, who teased him in letters about converting to Epicureanism around 53 BC; went on to become one of the most authoritative Roman jurists of the Augustan age, cited centuries later in Justinian's Institutes.