From Ger Dan McAuliffe of Glenlara Newmarket through Timmy O'Connor. This
was the music to a Set dance called "The Ideal" that Ger taught. The dance is lost now. I've looked for the tune on the internet and in O'Neill's book but couldn't find any trace. But then it showed up on Bryan O'Leary & Colm Guilfoyle's album "Where the Bog is" they have it as one of Thadelo's. If the only two traces of it are in Newmarket and Gneeveguilla then I'd guess that this is a Sliabh Luachra tune.
Second tune in this selection. Starts at 1:38