The two parties which in the times of Augustus had rent Rome asunder were now being realined in the imperial house and in the senate--the party of the old nobility, which had Agrippina at its head, and the party of the modernizing nobility, which was gathering about the emperor and trying to claim him as its own. Tacitus clearly tells us that the older and more respectable families of the Roman nobility were with Agrippina; and even if he had neglected to tell us so, we might easily have guessed it. For a moment the old, old struggle which had been the cause of so many tragedies in the upper classes of Rome seemed once more ready to break forth. But even though Agrippina was the soul of the party of the old nobility, the party needed a man whom it could oppose to Nero as a possible and better candidate for the imperial dignity. Agrippina, like a true Roman matron of the old type, looked upon the family merely as an instrument of political power, and therefore subjected her personal affections to the public interest. She began to cast her eyes upon Britannicus, the son of Messalina, who was now becoming a young man and who seemed to be more serious-minded than Nero. It was even muttered that she thought of giving her own son's place to the son of Messalina, when suddenly, in 55, Britannicus died at a dinner at which Nero was present. Was he poisoned by Nero, as Tacitus says? Although there is no lack of obscurities and improbabilities in the account of Tacitus, this time the accusation, if it is not true, is at least much more probable than the other accusations of the same kind. It is certain that the report that Britannicus had been poisoned was soon current at Rome, and that it was believed; and the death of Britannicus was likewise a fatal blow to Agrippina and her party. Tacitus tells us that the death of Britannicus caused Agrippina great terror and unspeakable consternation, and it is not difficult to divine the reasons. Nero now remained the last and only survivor of the family of Augustus, and it was therefore no longer possible to bring any effective opposition to bear upon him by setting up some other member of the family who would be capable of governing. The new nobility, with its modern tendencies, now rapidly gained strength, and the influence of Agrippina declined proportionately.