Fifth emperor of Rome, succeeded Caius Caligula, A. D. 41, and was followed by Nero, after a reign of thirteen years. He endowed Agrippa with royal authority over Judea, which on the death of Agrippa again became a province of Rome, A. D. 45. About this time probably occurred the famine foretold by Agabus, Acts 11:28. In the ninth year of his reign, he banished all Jews from Rome, Acts 18:2. In A. D. 43-44, he made a military expedition to Britain. His death was caused by poison, from the hand of his wife and niece Agrippina.