Sorry, I emailed some uniformed opinion on this before I realised that it was something of a minefield.

I have a tape recording made in a private club of my Grandfather playing this tune on the fiddle. As far as I knew this was made in the late 1950's and I am currently trying to check with relatives to see if they can establish the correct date of the recording.

I have a feeling this neither helps nor hinders anything but I felt I had to add it.