Thanks for taking it as it was meant, Jed. I'm happy with 'Celtic' as long as it, indeed, does not exclude more countries than it includes.In fact, if I have an 'issue' it's with books like Bill Malone's. I took his statement dismantling the Celtic argument for C&W at face value, then waited for him to back it up ... and it never really happened.
I'd be interested in knowing what song by which Welshman you're using ...
sian