7. P.Septimius, the quaestor of M. Terentius Varro, who sent to him three books De Lingua Latina (Varr. L. L. 5.1, 7.109, ed. Müller). He is probably the same as the P. Septimius, who wrote two books on architecture, as his name is mentioned by Vitruvius in conjunction with Varro's. (Vitruv. vii. Praef. p. 194, ed. Bip.)
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