Surnamed Germanicus, brother of Tiberius, emperor of Rome from 41 to 54, born at Lyons; after spending 50 years of his life in private, occupying himself in literary study, was, on the death of Caligula, raised very much against his wish by the soldiers to the imperial throne, a post which he filled with honor to himself and benefit to the State; but he was too much controlled by his wives, of whom he had in succession four, till the last of them, Agrippina, had him poisoned to make way for her son Nero.