(Κράτης) of TRALLES, an orator or rhetorician of the school of Isocrates. (D. L. 4.23.) Ruhnken assigns to him the λογοί δημηγορικοίκ which Apollodorus (apud Diog. l.c.) ascribes to the Academic philosopher, Crates. (Hist. Crit. Orat. Graec. in Opusc. i. p. 370.) Menagius (Comm. in Diog. l.c.) is wrong in supposing that Crates is mentioned by Lucian. (Rhet. Praecept. 9.) The person there spoken of is Critias the sculptor.
[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