Galatia means in the bible: An area in central Asia Minor inhabited by Gaul tribes who arrived in the third century B.C. Galatia also referred to Gallia or Gaul in Greek. Acts 16;6 and 18:23 mention that Paul visited it on both his second-and third trips. Scholars believe that Luke and Paul considered the Antioch, Iconium and Lystra cities, which were visited by Paul during his first trip, to be part of Galatia. It was also believed that this was where the epistle addressed the Galatians. With the exception of Iconium, they formed part of the Roman province Galatia. However, in common speech, were referred to as being from Pisidia and Lycaonia.
(in Bible Dictionary)