"Sweet Ellen/Sweet Ellum", also known as "Gem of Ireland", "Clarkson's Reel" or "Post-Oak Grove" is an Irish reel in D Major. The parts are played AABB. The Cape Breton/Prince Edward Island tune "Homeward Bound" is derivative of this tune. This tune is apparently the ancestor of "Rocky Mountain Hornpipe" which was collected by Samuel Bayard from Emery Martin, Dunbar, Fayette County, Pennsylvania on September 29, 1943. The version shown here is the one collected by Samuel Bayard from Irvin Yaugher Jr. on October 19, 1943 in Mt. Independence, Pa. and was printed in Hill Country Tunes. Other versions were also printed in his Dance to the Fiddle. It was well known in southwestern Pennsylvania. There is a version printed in Cole's 1000 Fiddle Tunes as "Gem of Ireland". Another tune appears there as "Sweet Ellen". It was also printed in O'Neil's Music of Ireland (1903).