Con Cronin’s polka

From the playing of Bryan O’Leary & Colm Guilfoyle.

According to Irish Tune Info (https://www.irishtune.info/tune/7013/ ), it appears in “Johnny O’Leary of Sliabh Luachra. Dance Music from the Cork-Kerry Border”.

Variations from the playing of Bryan O’Leary & Colm Guilfoyle.

Apparently, this is a polka version of The Green Flag march:
https://thesession.org/tunes/8833

Also recorded by Mikie Smyth as a sort of an air, though he did call it Denis Murphy’s on his album which very much hints at the source! (Air?) > March > Polka > Air it is. The ways of tunes can be mysterious indeed.