is early mentioned. There was a tribune of the plebs of the name of Sex. Pompilius in B. C. 420 (Liv. 4.44); and Q. Cicero speaks (de Pet. Cons. 3) of a Roman eques of the name, who was a friend of Catiline ; but these are almost the only Pompilii of whom we have any account, with the exception of the grammarian mentioned below. The gentes, which traced their descent from Numa Pompilius, the second king of Rome, bore other names. [CALPURNIA GENS ; POMPONIA GENS.]