6. A king of a portion of Thrace, and perhaps one of the sons of No. 5. (See Tac. Ann. 2.67.) In A. D. 38, Caligula gave the whole of Thrace to Rhoemetalces, son of Rhescuporis, and put Cotys in possession of Armenia Minor. In A. D. 47, when Claudius wished to place Mithridates on the throne of Armenia, Cotys endeavoured to obtain it for himself, and had succeeded in attaching some of the nobles to his cause, but was compelled by the commands of the emperor to desist. (D. C. 59.12; Tac. Ann. 11.9.)