Hastings' Dictionary of the Bible (1898)
GAL'LIO, proconsul of Achaia and brother of Seneca, the famous philosopher, who describes him as a man of great mildness and simplicity. Acts 18:12. Paul was brought before his tribunal at Corinth by the Jews, who accused him of blasphemy. Acts 18:6. Gallio dismissed the case as one not cognizable by a Roman court. Acts 18:14-15. He deemed the offence at best a trivial one. Like his brother Seneca, Gallio was executed at the command of Nero.