(Κόρσκος), is mentioned, with Erastus, as a disciple of Plato, by Diogenes (3.31, s. 46), who also states, that Plato wrote a letter to Erastus and Coriscus. (3.36, s. 61.) They were both natives of Scepsis in the Troas. (Diog. l.c.; Strab. xiii. p.608.)
[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