[1] Galatia was bounded to the north by Bithynia and Paphlagonia, to the east by Pontus and Cappadocia, to the south by Cilicia and Lycaonia, and to the west by Phrygia.

[6] In 380 BC, they fought in the southern regions of Dalmatia (present day Croatia), and rumors circulated around the ancient world that Alexander the Great's father, Philip II of Macedonia had been assassinated by someone using a dagger of Celtic origins.

In 277 BC, when the hostilities had ended the Galatians came out of Nikomedes' control and began raiding Greek cities in Asia Minor while Antiochus was solidifying his rule in Syria.

The Galatians looted Cyzikus, Ilion, Didyma, Priene, Thyatira and Laodicea on the Lycus, while the citizens of Erythras paid them ransom.

[13] Upon the death of Deiotarus, the Kingdom of Galatia was given to Amyntas, an auxiliary commander in the Roman army of Brutus and Cassius who gained the favor of Mark Antony.

[15] Near his capital Ancyra (modern Ankara), Pylamenes, the king's heir, rebuilt a temple of the Phrygian god Men to venerate Augustus (the Monumentum Ancyranum), as a sign of fidelity.

Although originally possessing a strong cultural identity, by the 2nd century AD, the Galatians had become assimilated (Hellenization) into the Hellenistic civilization of Anatolia.