I got it from this video, sounds like it could be a recent composition, possibly by the fabulous whistle player, Pat Tierney from Ballyjamesduff. But I am not wholly sure.
I don’t usually go for syncopated tunes but I really dig the B section.
http://comhaltas.ie/music/detail/comhaltaslive_258_3_pat_tierney/ tune starts at 1:52
Sounds familiar. Got to check some of my CD’s such as Emer Mayock’s "Playground". Could be a Breton tune.