A Scots slaver Captain turned Presbyterian minister wrote it. I could look for a Scots Gaelic version if you like. Also, "When the Work's All Done Next Fall" is the same tune as "Going Back to Miltown", an Irish song.

If you are interested in just tunes, most American barn dance tunes are Celtic/Irish in origin--Turkey in the Straw, Soldier's Joy, Irish Washerwoman, etc.