Ethnarch

Ethnarch (ἐθνάρχης), properly ruler of a nation; hence generally a praefect of a district or city (Lucian, Macrob. 17), e.g. Simon Maccabaeus, as head of the Jewish crommonwealth (1 Macc. 14:47, "governor;" 15:1, 2, "prince ;" Josephus, Ant. 13:6, 6); Archelaus, appointed lay his father's will and the emperor's ratification, his viceroy in Judaea (Josephus, War, 2:6, 3), of the national head (modern "patriach") of time Jews in Egypt (Josephus, Ant. 14:7, 2; conp. Strabo, 16:798). Spoken of the "governor" or mayor of the city of Damascus (2Co 11:2), under the Arabian king Aretas (q.v.). (See Walch, Disert. in Acta Aposit. 2:85.)

⇒See also the International Standard Bible Encyclopedia.