(Φρόντων), the author of two epigrams in the Greek Anthology (Brunck, Anal. vol. ii. p. 346; Jacobs, Anth. Graec. vol. iii. p. 56, xiii. p. 938). Jacobs supposes him to be the rhetorician of Emisa, mentioned by Suidas (s. v.), who lived in Rome in the reign of Severus, and died at Athens at the age of sixty, and who was the uncle of the celebrated critic Longinus. He is constantly confounded with the distinguished Roman orator, M. Cornelius Fronto, the tutor of M. Antoninus. (See Ruhnken, Dissert. Philol. de Longino, §iii. p. 6, Opusc. p. 491.)
[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