Greg, there a more detailed discussion on this subject a while back. Malcolm Douglas contributed, if memory serves. Me too! I seem to recall that there was also a Scottish harper called Rory Dall Morrison, about 40 after O'Kane, so the two are sometimes confused. It is pretty certain that it's an Irish air and that O'Kane wrote it, or at least was the first to play it.

If Malcom, or some one else, doesn't come back I'll dig out the book on the Scottish harp that I quoted from last time from my local public library tomorrow.