This lovely tune was most likely composed by Turlough O'Carolan, the famous blind harper of Ireland.
I chose to play the tune in a non-traditional key (E-flat major) and in a slower tempo because I think it works well for a bridesmaid procession.
The original Gaelic may refer to either a big hill and a little hill, or a big and little fairy hill.
Whatever the meaning, it is a sweet tune and I hope that you enjoy my arrangement.