Gaius Julius Polybius (fl. 1st century ) was a freedman of Emperor Claudius who was elevated to the secretariat during his reign. He assisted Claudius in his literary, judicial and historical pursuits as a researcher before the emperor's accession and this became Polybius' official role in the imperial bureaucracy, with the title a studiis.Seneca, dialogus 11,5,2. Suetonius, the biographer and secretary to the Emperor Hadrian, claims that Claudius was so appreciative of his help that Polybius was allowed to walk between the consuls when on official business. (available at gutenberg.org)
