The problem you'll have now diggle2 is that the thread has started in an ambiguous manner and, as frequently happens, as it gets longer most people will only read the first couple of postings and then add to it in that vein so your one above will probably get missed.

No easy way round that I'm afraid. Anyway to add some thoughts

I'd imagine that many of the most popular "traditional" songs sung in the clubs are probably not from the "collectors" (at least not performed in the collected manner) but from the revivalists who reworked them from oold broadsides and written collections and which have probably moved on from the "traditional" original.

Could be wrong though, it's been known.