Nice simple song/poem written by Joseph Mary Plunkett (faught in the 1916 Rising and was executed for it) called "Grace"
Excellent choice Dave! - not meaning to be overly pedantic but it wasn't actually written by Joseph Plunkett just from his POV. It was written in 80's by two brothers from Galway called Frank and Sean O'Meara.
Two mind bendlingly beautiful songs..
The Pogues - Rainy Night In Soho. MacGowan's finest hour.
And The Band Played Waltzing Matilda written by Eric Bogle and recorded by many.. the greatest anti-war song of them all.