Long time lurker, first time asking a question so hopefully everything is above board.
I've had a really good look through this site and the results of Google but unfortunately cannot find a definitive answer to this question: where did the Celtic invaders of Britain originate from specifically, before invading c2000BC-400BC?
My interest here comes from my Surname, which is a very specific Celtic profession native to Britain, ie; wasn't inherited from the Romans, Anglo-Saxons or Normans. The family name originates from Somerset, which places the tribe as Durotriges as far as I can tell.
Where did the Durotriges people come from before settling here? Can anyone be more specific than "probably Europe"? Is there anything linking Durotriges to specific parts of Europe?
I should add, i'm aware that there were effectively two Celtic invasions between 2000BC and 400BC and this is an extraordinarily large time frame. I understand the Durotriges may have been forced West toward Somerset by the later invasion of the Belgae, which may suggest they were in Brtain earlier.
The main problem with answering a question like this is that there is no scientific consensus on who the Celts were, at least if the definition of a Celt is a unified group, thus it is hard to say precisely where they came from, and whether they arrived in the British isles as a unified group or not.