2. C. Postumius, an architect, whose name occurs in an inscription in the cathedral at Terracina; from which it may be inferred, with much probability, that he was the architect of the celebrated temple of Apollo at that place. From another inscription it appears that C. Cocceius, the architect of the temple of Augustus at Pozzuoli, was the freedman and disciple of this Postumius Pollio. (R. Rochette, Lettre à M. Schorn, pp. 440-441, 2nd ed.)
[P.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890