I hope that was get together in a pub for a friendly a drink, Dai, rather than get together in the pub to kick the shit out of...

"Finding a skeleton with a Roman ballista bolt in the spine does rather confirm the written evidence that the Roman take-over was a conquest: finding a skull caved in by a flint axe could simply mean a domestic altercation.

Still might be a domestic altercation, involving some jealous husband with acces to hi-tech weaponry. Or a regrettable firing range accident. Or both, according to whose story you believed.

But so far as the Romans are concerned, the question isn't whether it was a conquest, but rather it is, how far was there any significant immigration from other parts of the Roman Empire, and population displacement.

I believe there was quite a lot of coming and going between Wales and Ireland in the post Roman period, with a fair amount of population exchange, voluntary or not.