The inhabitants of Britain and Ireland, just like anywhere else, were sensible and ingenious folk. On occasion they would come up with a good invention, which would then spread elsewhere.. More commonly they would see some new idea brought in by a neighbour/visitor. If useful, it would be taken up, used, maybe improved on to be more suitable for local conditions. A simple and obvious process, morally value-free.
    I don't think we need to drag in notions "of Celtic" "Gaelic" "English" etc etc to illuminate(or inflame) discussions of the possible origins and use of some rather clever and beautiful ideas in instrument construction.Galicia's Celticness(or not) are serious red-herringsas, as is all the other nonsense. Quite what is meant to be "Celtic" about Galicia, as opposed to say Denmark or Belgium (both historically riddled with "Celtishness") is beyond me. I like the original subject of the thread much better@ who invented those clever little brass mechanisms etc etc. They do deserve recognition, if we could only find out who they were. Whether they were "Celtic" or not....yawn, yawn, yawn...