We met the procession at Terracina

We met the procession at Terracina, about sixty miles southeast of Rome, where Agrippina, who had walked dry-eyed and marble-faced, without a word to anyone all the way from Brindisi, let her grief break out afresh at the sight of her four fatherless children. She cried to Castor:
"By the love you had for my dear husband swear that you will defend the lives of his children with your own, and avenge his death! It was his last charge to you." Castor, weeping, for the first time perhaps since his childhood, swore that he would accept the charge.
If you ask why Livilla did not come with us, the answer is that she had first been delivered of twin boys: of which, by the way, Sejanus seems to have been the father. If you ask why my mother did not come, the answer is that Tiberius and Livia did not allow her even to attend the funeral. If overwhelming grief prevented their own attendance, as grandmother and adoptive father of the dead man, it was clearly quite impossible for her, as his mother, to attend. And they were wise not to show themselves. If they had done so, even with a pretence of grief, they would certainly have been assaulted by the populace; and I think that the Guards would have stood by and not raised a finger to protect them. Tiberius had neglected to make even such preparations as were customary at the funeral of far less distinguished persons: the family masks of the Claudians and Julians did not appear nor the usual effigy of the dead man himself, laid on a bed; no funeral speech was made from the Oration Platform; no funeral hymns sung. Tiberius's excuse was that the funeral had already been celebrated in Syria and that the Gods would be offended if the rites were repeated. But never was such unanimous and sincere grief shown in Rome as on that night. Mars Field was ablaze with torches, and the crowd about Augustus's tomb, in which the um was reverently placed by Castor, was so dense that many people were crushed to death. Everywhere people were saying that Rome was lost, and that no hope remained: for Germanicus had been their last bulwark against oppression, and Germanicus was now foully murdered. And everywhere Agrippina was praised and pitied, and prayers were offered for the safety of her children.
Tiberius published a proclamation a few days later saying that, though many illustrious Romans had died for the commonwealth, none had been so universally and vehemently regretted as his dear son. But it was now time for the people to compose their minds and return to their daily business: princes were mortal, but the commonwealth eternal. In spite of this. All Fools' Festival at the end of December passed without any of the usual jokes and jollity, and it was not until the Festival of the Great Mother in April that mourning ended and normal public business was resumed. Tiberius's suspicions were now concentrated on Agrippina. She visited him at the Palace on the morning after the funeral and fearlessly told him that she would hold him responsible for her husband's death until he had proved his innocence and taken vengeance on Piso and Plancina. He cut short the interview at once by quoting at her the Greek lines: