In the reign of Tiberius, and probably early in the reign, two sons, one of them the subject of this paper, were born to a member of the Jewish community of Alexandria, Alexander mistakenly surnamed Lysimachus. His respectability was vouched for by the learning and standing in the community of his brother Philo, his piety by the gift of new gates to the temple at Jerusalem, and his wealth brought him into contact with prominent personalities in both the Roman and Jewish worlds. Agrippa, the grandson of Herod the Great by Aristobulus, was the beneficiary, at a crisis in his fortunes, of Alexander's sympathetic banking transactions; a letter of credit on Puteoli for a large sum enabled this winsome but wasteful scion of the Jewish royal house to face his creditors and return to Italy, and the investment turned out well for Alexander himself, and was to associate his children, particularly Tiberius Iulius, closely with the family of Agrippa for the rest of the latter's lifetime.
1 PIR II, 164–5, no. 92; A. Stein, P-W 153 (Julius 59) and PIR2 I, 86, no. 510; Le Pape, Bull. Soc. roy. d'archéol. d'Alex., 8, no. 29 (1934), 332 ff.