1911 Encyclopædia Britannica/Mentor of Rhodes

MENTOR OF RHODES, brother of Memnon (q.v.), a Greek condottiere who appears first in the service of the rebellious satrap Artabazus of Phrygia in 363. When Artabazus had rebelled a second time and was in 353 forced to flee with Memnon into Macedonia, Mentor entered the service of the Egyptian king Nectanebus, and was sent by him with a body of Greek mercenaries to support the rebellious king Tennes (Tabnit) of Sidon against Artaxerxes III. But Tennes and Mentor betrayed the besieged town to the Persians (344 B.C.). Tennes was killed after his treason, but Mentor gained the favour of the king. It was due largely to him that Egypt was conquered in 343 (Diod. xvi. 45 sqq.). He now closely allied himself with the eunuch Bagoas (q.v.), the all-powerful vizier of Artaxerxes III. He was appointed general in Asia Minor, and with the help of Artabazus and Memnon, whose pardon and recall he obtained from the king, subdued the rebels and local dynasts. The most famous among them was Hermias of Atarneus, the protector of Aristotle, who had become master of some towns of Aeolis and Troas. By treachery he made him prisoner and occupied his towns (342 B.C.); Hermias was executed by order of the king (Diod. xvi. 52; Polyaen. vi. 48; pseudo-Arist. Oecon. ii. 27; Strabo xiii. 610; Didymus’ commentary on Demosthenes Phil. 4, p. 6; cf. Diog. Laërt. vi. 9). Shortly afterwards Mentor died, and was succeeded by his brother Memnon. His son Thymondas commanded in the naval war against Alexander and at Issus (Arrian ii. 2, 1; 13, 2).  (Ed. M.)