FYI: From the book "Folk Songs and Ballads popular in Ireland (volume 1)" in the back they have small write ups on each of the tunes. For Rising of the Moon, they say: "John Keegan Casey, the author of this poem, was imprisoned himself at the age of twenty and died as a result of brutal treatment. Originally another tune was used. 'The wearing of the green' is the air to which it is sung now.