I don't know if this will help but it's sung by Anne Lorne Gillis on a CD called "The Hills of Lorne". The CD says it's by ______ Scott. If no one else comes up with the words I'll try to listen and write them down for you. I may not understand them all, tho.

I think it starts out, "When I no more behold thee, think on me."

Is that the right song?