After the retirement of Tiberius to Capri, all felt that Agrippina and her sons were inevitably doomed sooner or later to succumb in the duel with the powerful, ambitious, and implacable prefect of the pretorians who represented Tiberius at Rome. Only a few generous idealists remained faithful to the conquered, who were now near their destruction; such supporters as might possibly ease the misery of ruin, but not ward it off or avoid it. Among these last faithful and heroic friends was a certain Titius Sabinus, and the implacable Sejanus destroyed him with a suit of which Tacitus has given us an account, a horrible story of one of the most abominable judicial machinations which human perfidy can imagine. Dissensions arose to aggravate the already serious danger in which Agrippina and her friends had been placed. Nero, the first-born son, and Drusus, the second, became hostile at the very moment when they should have united against the ruthless adversary who wished to exterminate them all. A last rock of refuge remained to protect the family of Germanicus. It was Livia, the revered old lady who had been present at the birth of the fortunes of Augustus and the new imperial authority, and who had held in her arms that infant world which had been born in the midst of the convulsions of the civil wars, and a little later had watched it try its first steps on the pathway of history. Livia did not much love Agrippina, whose hatred and intrigues against Tiberius she had always blamed; but she was too wise and too solicitous of the prestige of the family to allow Sejanus entirely to destroy the house of Germanicus. As long as she lived, Agrippina and Nero could dwell safely in Rome. But Livia was feeble, and in the beginning of 29, at the age of eighty-six, she died. The catastrophe which had been carefully prepared by Sejanus was now consummated; a few months after the death of Livia, Agrippina and Nero were subjected to a suit, and, under an accusation of having conspired against Tiberius, were condemned to exile by the senate. Shortly after his condemnation, Nero committed suicide.