It is probable that he was banished to Corsica with his brother, and that they returned together to Rome when Agrippina selected Seneca to be tutor to Nero.
Towards the close of the reign of Claudius, Gallio was proconsul of the newly constituted senatorial province of Achaea, but seems to have been compelled by ill-health to resign the post within a few years.
Gallio was a suffect or replacement consul in the mid-50s,[2] and Cassius Dio records that he introduced Nero's performances.
15.73) was attacked in the Senate by Salienus Clemens, who accused him of being a "parricide and public enemy", though the Senate unanimously appealed to Salienus not to profit "from public misfortunes to satisfy a private animosity".
When his second brother, Annaeus Mela, opened his veins after being accused of involvement in a conspiracy (Tacitus, Ann.