(Ἀλέξανδρος), brother of MOLO. On the accession of Antiochus III., afterwards called the Great, in B. C. 224, he entrusted Alexander with the government of the satrapy of Persis, and Molo received Media. Antiochus was then only fifteen years of age, and this circumstance, together with the fact that Hermeias, a base flatterer and crafty intriguer, whom every one had to fear, was all-powerful at his court, induced the two brothers to form the plan of causing the upper satrapies of the kingdom to revolt. It was the secret wish of Hermeias to see the king involved in as many difficulties as possible, and it was on his advice that the war against the rebels was entrusted to men without courage and ability. In B. C. 220, however, Antiochus himself undertook the command. Molo was deserted by his troops, and to avoid falling into the hands of the king, put an end to his own life. All the leaders of the rebellion followed his example, and one of them, who escaped to Persis, killed Molo's mother and children, persuaded Alexander to put an end to his life, and at last killed himself upon the bodies of his friends. (Plb. 5.40, 41, 43, 54.)