This is a march, but put here in lieu of a "march" category on the site.
This is transcribed from the recording "Forgotten Gems" by Peter Carberry and Pádraig McGovern. It’s a fantastic album, through and through. Buy it! The recording is listed here: https://thesession.org/recordings/4524
Peter and Pádraig note on their website ( http://www.carberrymcgovern.com ) "Pádraig learnt this march from the playing of the Ceolas céilí band which is led by Fr. John Quinn (PP Gortlettragh). This particular march was found in the Stephen Grier collection."
According to Wikipedia, "The 4th Royal Irish Dragoon Guards was a cavalry regiment in the British Army, first raised in 1685. It saw service for three centuries, before being amalgamated into the 4th/7th Dragoon Guards in 1922." ( http://en.wikipedia.org/wiki/4th_Royal_Irish_Dragoon_Guards )
A discussion about the tune here:
Well done and thanks Joe. Great tune and great album.