The author examines the circumstances of the early youth of Octavian and Agrippa and the beginning of their friendship. Agrippa’s family was probably wealthy but its origin was quite humble, and Octavian’s lineage was not much higher; his ancestors, except his grandmother Julia, belonged to Italian municipal families. It appears that Agrippa met Octavian in the house of the latter’s stepfather Philippus, and in the same house Agrippa’s brother made acquaintance with Cato, the son-in-law of Philippus.