In reply to someone earlier in this thread who mentioned that Scots genes are all over the world. Why? Apart from wars we were conscripted into by the English, it's basically down to 'the Highland Clearances'. (Yes, I did mention them before.)
In the late 1800's, the English landowners realised that they could make more money by having sheep on their land rather than crofters, small tenant farmers, people. So they kicked them out. Not just sending a legal notice, oh no. They sent a bunch of heavies to every croft and, if necessary, burned the house down. In one famous documented case, a bed-bound grandmother was burned to death in her family home by such animals.
Where could the people go? The east coast of Scotland had good fishing, so many went there. However, the fishing could only support a finite number. Where did the rest go?
Americay, Canada, Australia, New Zealand, the colonies. Engineers, sheep-shaggers and such.
Why is the NYPD made up of Irishmen? (They were screwed, as well, by the potato famine, exacerbated by England.)
I'd say Celtic genes (knowing Celtic proclivities) are in every single corner of the world, even in that place in North Borneo no-one can even pronounce and whose inhabitants have never been met by 'civilised man'. Bet the first one you meet is going to be named Mac or Jock or Paddy or Jones the Bard or Maggie or Caitlin. Certainly not Elizabeth or William or Harold or Nigel or any other poncy English names.
As a Scot, I'd like to state that we are still extremely pissed off about everything England has managed to do to us. And we support our neighbours in oppression.