The first place, in rank at least, among the dependent dynasts was held by the king of Cappadocia, whose territory Lucullus had already enlarged by investing him with the province of Melitene (about Malatia) as far as the Euphrates, and to whom Pompeius farther granted on the western frontier some districts taken off Cilicia from Castabala as far as Derbe near Iconium, and on the eastern frontier the province of Sophene situated on the left bank of the Euphrates opposite Melitene and at first destined for the Armenian prince Tigranes; so that the most important passage of the Euphrates thus came wholly into the power of the Cappadocian prince. The small province of Commagene between Syria and Cappadocia with its capital Samosata (Samsat) remained a dependent kingdom in the hands of the already-named Seleucid Antiochus;(21) to him too were assigned the important fortress of Seleucia (near Biradjik) commanding the more southern passage of the Euphrates, and the adjoining tracts on the left bank of that river; and thus care was taken that the two chief passages of the Euphrates with a corresponding territory on the eastern bank were left in the hands of two dynasts wholly dependent on Rome. Alongside of the kings of Cappadocia and Commagene, and in real power far superior to them, the new king Deiotarus ruled in Asia Minor. One of the tetrarchs of the Celtic stock of the Tolistobogii settled round Pessinus, and summoned by Lucullus and Pompeius to render military service with the other small Roman clients, Deiotarus had in these campaigns so brilliantly proved his trustworthiness and his energy as contrasted with all the indolent Orientals that the Roman generals conferred upon him, in addition to his Galatian heritage and his possessions in the rich country between Amisus and the mouth of the Halys, the eastern half of the former Pontic empire with the maritime towns of Pharnacia and Trapezus and the Pontic Armenia as far as the frontier of Colchis and the Greater Armenia, to form the kingdom of Lesser Armenia. Soon afterwards he increased his already considerable territory by the country of the Celtic Trocmi, whose tetrarch he dispossessed. Thus the petty feudatory became one of the most powerful dynasts of Asia Minor, to whom might be entrusted the guardianship of an important part of the frontier of the empire. Princes and Chiefs