I don't recognise the tune, but there are sites with info, music notation and audio files of many of Stan Treacy's tunes, e.g.

Bush Traditions: Stan Treacy tunes

DaveJohnson, I expect you have checked out a lot of these sites. You said you have transcribed this tune. I'm wondering how you heard Stan Treacy play this. Was it live, or on a radio show, or recorded? More information might help to narrow down the search.