This one is obviously related to its mixolydian cousin, The Mullingar Lee:
http://thesession.org/tunes/1657
It distinguishes itself by that catchy B part, with those characteristic I - IV - ii - V phrases.
The version I posted is again as played by Michael on http://irishflute.podbean.com/2007/06/20/nine-pint-coggie/, with some of his variations shown.
Two comments
The Nine Pint Coggie
Duplicated
This isn’t the Nine Pint Coggie, which is a completely different tune. Your tune is a Gmaj version of Scott Skinner’s "David Adams" http://thesession.org/tunes/8575.