Galatian DNA - Evidence of Celtic expansion

This map show's Greek geographer Strabo's account of the migration of the Tectosages, one of three Celtic (Gaulish) tribes, descended from the Volcae tribe which originates in Germany, that migrated East to Phrygia to form the Galatian Celtic group. Even Saint Paul wrote that there were Celts there in his Epistle to the Galatians ("you Celtic goyim don't need to get circumcised") so their presence is well attested. But now we have their DNA! (one sample at least)

The Iron Age sample called Anatolia_IA_MA2197 can be modelled as 57% Bell Beaker derived (signifiant because although Beaker folk didn't speak Celtic, we know the Celts were Beaker descended), it also shows a strong affinity with a sample from the Halstatt Proto-Celtic culture of Austria.

 Interestingly, if we assume the Hallstatt and Urnfield people to be genetically similar to the Celts who expanded East and West in the 3rd century BC and to the ones who brought Celtic languages to Britain in 6th BC we can see that in all the modern day "Celtic" regions, their genetic influence is small (UK, Brittany and Ireland) to negligible (Galicia - where there are greater amounts of medieval Arabic admixture than Iron Age Hallstatt).

The paper
Eurogenes blog post on the modelling