Ancyra was the centre of the Tectosages, one of the three Gaulish tribes which settled in Galatia in the 3rd century B.C., and became the capital of the Roman province of Galatia when it was formally constituted in 25 B.C. During the Byzantine period, throughout which it occupied a position of great importance, it was captured by Persians and Arabs; then it fell into the hands of the Seljuk Turks, was held for eighteen years by the Latin Crusaders, and finally passed to the Ottoman Turks in 1360.
He rapidly overran Galatia, Phrygia and Asia, defeated the Roman armies, and ordered a general massacre of the Romans in Asia.
Other tetrarchs also pressed their claims; and, further, DeIotarus was accused by his grandson Castor of having attempted to assassinate Caesar when the latter was his guest in Galatia.
The Greek form of Gallia was FaXaria, but Galatia in Latin denoted another Celtic region in central Asia Minor, sometimes styled Gallograecia.
Syria, Pontus, Lydia, Galatia, and above all Thrace were sources of supply.