From BiblePortal Wikipedia

Hastings' Dictionary of the Bible [1]

Gauls . See Galatia.

International Standard Bible Encyclopedia [2]

gôlz ( Γαλάται , Galátai ): Galatia in Asia Minor is literally the Gallia of the East; its inhabitants are called Galli by Roman writers, just as the inhabitants of ancient France are called Galatai by Greek writers. In some manuscripts in   2 Timothy 4:10 , eis Gallı́an is read for eis Galatı́an ̌ . The emigration of the Gauls from Europe and their settlement in the central region of the peninsula of Asia Minor are somewhat obscure subjects, but the ancient authorities leave no doubt of the main facts. In 1 Macc 8:2 it is difficult to say whether Judas Maccabeus is referring to the Gauls of Europe or the Gauls of Asia Minor. Both became finally subject to the Romans, and about the same time. It was in 191 bc that Gallia Cisalpina was reduced to the form of a Roman province, and in 189 bc occurred the defeat of Antiochus, king of Asia. Mommsen argues that the reference is to the Gauls in the North of Italy, from the circumstance that they are mentioned as being under tribute to the Romans, and also from their mention in connection with Spain. Not much, however, can be argued from this, as the notice of them is in a manner rhetorical, and the defeat of Antiochus is mentioned practically in the same connection. In 2 Macc 8:20 the reference is without doubt to the Asiatic Gauls or Galatians, as they are more commonly called. In the Maccabean period they were restless and fond of war, and often hired themselves out as auxiliaries to the Asiatic kings.