I was recently asked to learn this fabulous O'Carolan tune by a guitar student of mine and I got to work on learning Nic Jones' arrangement from his fantastic album 'Penguin Eggs'. After a couple of days of playing around with it I added a few additional chords which I play towards the end of the arrangement... I've got my own transcription / TAB of this in DGDGBD if anyone fancies learning it drop me a line