My apologies for confusion.

I'm trying to identify 'who' firstly, then 'what' secondarily, The quest being what songs might be discovered not previously thought to be 'traditional' (!!!) or obscure, or variants on known songs.

As I've said, my current interest is in identify a mysterious group The Watchers from 25 years ago. I'm finding new leads all the time.
Then I'll be comparing my findings with other people's, and Brian Kell has already I try Johnny Handle who, so I gather, is another visitor in the past to the Blyth care home which prompted this enquiry,