From the words I'd guess the tune is that of the Gower Wassail (no help if you're not familiar with that, of course - it's the one Steeleye sang).

Also PLEASE NOTE that the words should be marked (C) Chris Sugden (hope I've got that right!!).

What's the significance of "Source: Ron Shuttleworth" then, Conrad? Why is your source info always so minimalist?

G.