There is some speculation that the inscription was added by Claudius himself decades later, and that he originally did not appear at all.
When Augustus died in 14 AD, Claudius — then 23 — appealed to his uncle Tiberius to allow him to begin the cursus honorum.
In 7 AD, Livy was hired to tutor him in history, with the assistance of Sulpicius Flavus.
He spent a lot of his time with the latter and the philosopher Athenodorus.
His maternal grandparents were Mark Antony and Octavia Minor, Augustus' sister, and he was therefore the great-great grandnephew of Gaius Julius Caesar.