Oh thanks a lot Martin. I don't appear on that thread that you linked but, maybe it was on another one seeking this song. I'm afraid that I don't remember but, I've learned how to print off these posts since then and I now have it "forever"   (Now where did I put that sheet of pape..)
I used to know Tom Brett in Carrick-on-Suir, in fact I bought a lovely 2nd hand Ford Capri from him back around 1970.
His group were known as the "Southern Folk Four". I've lost touch with them all.