The premature death of Marcellus threw all the matrimonial schemes again into the melting-pot. His marriage had been a marriage only in name, and had left no offspring. For two years nothing was done, but when the whole Imperial party moved to the East in B.C. 21 marriage was again in the air. There was a sojourn, accompanied with much festivity, at Samos, where Agrippa met the rest of the family. His marriage with Marcella had proved childless, his union with the Julian stock had failed; Julia herself seems to have shown signs of an inclination for Tiberius, but such a union would have strengthened the Claudians too much, and Tiberius himself was attracted, if by anybody, by the daughter of Agrippa. Augustus took matters into his own hands; he persuaded his sister to allow her daughter to be divorced, and married his own daughter to his faithful friend Agrippa, a man at least twenty years older than herself. The line of succession was to be through the children of Agrippa and grandchildren of Augustus; Livia, and Octavia were left out in the cold. The former consoled herself by interchanging amenities with the husband of Mariamne on the Phœnician coast, and both ladies pleased themselves later on with a double marriage project, which to some extent restored the balance; Tiberius married Vipsania, and his brother Drusus the very beautiful younger Antonia. The dates of these two marriages are not determinable, but as Tiberius was the father of only one child, in B.C. 12, when Agrippa died, his marriage at any rate was probably a late one, when he was about thirty years of age. There is reason for believing that this at least was a love match. Julia proved to be a fertile mother, she brought five grandchildren to the founders of the Empire and if the succession was to depend on the principle of heredity, it was secured, for both the ruling powers were interested in transmitting the succession in the Julian line, and three of the children were sons. Augustus was delighted; the philoprogenitive passion broke out in him; he insisted that Julia and her husband should live in his house; he provided instructors for the children; he seldom went out unless accompanied by them, and they rode round his litter when he went into the country. The boys he adopted, buying them of their father by the ancient rude ceremony, and the two elder ones were henceforth known as Caius and Lucius Cæsar. Livia was more than ever in need of such consolations as could be won by intriguing with Oriental potentates. It seemed that the Claudians were definitely relegated to a subordinate position, and the young Cæsars began to pay increased attention to the mythology of the Æneid and the story of their mystic descent from the goddess Venus. A marriage between the son of Drusus Nero, afterwards known as Germanicus, and Agrippina, the daughter of Julia and Agrippa, was the sole bright spot in the dynastic fortune of the Claudians.