Strabo, Geography

The Galatians, then, are to the south of the Paphlagonians. And of these there are three tribes; two of them, the Trocmi and the Tolistobogii, are named after their leaders, whereas the third, the Tectosages, is named after the tribe in Celtica.¹ This country was occupied by the Galatae after they had wandered about for a long time, and after they had overrun the country that was subject to the Attalic and the Bithynian kings, until by voluntary cession they received the present Galatia, or Gallo-Graecia, as it is called. Leonnorius is generally reputed to have been the chief leader of their expedition across to Asia. The three tribes spoke the same language and differed from each other in no respect; and each was divided into four portions which were called tetrarchies, each tetrarchy having its own tetrarch, and also one judge and one military commander, both subject to the tetrarch, and two subordinate commanders. The Council of the twelve tetrarchs consisted of three hundred men, who assembled at Drynemetum, as it was called. Now the Council passed judgment upon murder cases, but the tetrarchs and the judges upon all others. Such, then, was the organization of Galatia long ago, but in my time the power has passed to three rulers, then to two; and then to one, Deïotarus, and then to Amyntas, who succeeded him. But at the present time the Romans possess both this country and the whole of the country that became subject to Amyntas, having united them into one province.²