One group headed more eastwards, and into the areas later known as Galatia. They worked their way through Macedonia, Greece, Thrace and Thessally. They even sacked the temple at Delphi at one point, and many latter moved on into Asia Minor, into the area later known as Gallatia (you may remember the Letter of St. Paul to the Gallatians, these are it - around 74 AD they were still there, though later got absorbed into greek society) Paul wrote that they were greatly Hellenized, but kept their celtic tongue and were given to boasting, idolatry, sorcery, and drinking (all decidedly celtic traits *grin*) I think this area is around or near modern day Turkey, thus you get that influence, along with the greek.

The third moved westward, in an ever expanding range into Gaul (france, denmark area) This was Gaul central, Gallia Transalpina (gaul-beyond-the-alps, so creative in naming, eh? :) They spread throughout spain, france, etc. There were tribal movements between there, Brittany, Scotland and Ireland for centuries. The last great migration in pre-classical times was the invasion of the Belgae into southern Britain and Ireland around 250 BC. They had much trade and contact with the greek settlements in the Iberian peninsula (spain/france). Thus Caesars' mention that they used greek characters for everyday use, but the druids wrote down nothing. And there you go, the migrations of the celts up to Caesars era. As to where they came from before that, the book (Kingdom of the Celts) does not speculate, but this does give a better picture of the celts during the (recorded) time of the druids.

-Raffaella