Mary,

I also thank you for posting the words. It's obviously worth having a look to be sure but as Matthew says, it's a long shot. Robert Edward writes in the mid 1600's but Bronson gives that the only tune is the one "salvaged by Burns" and printed in Johnson's. A later version of this tune was collected with different words.

Johnson's Musical Museum is sort of available here & there - try your inter-library loan dept. It's in Bronson The Traditional Traditional Tunes of the Child Ballads vol 1, p253. The second tune is there as well. Bronson is possibly harder to get hold of than Johnson's. I could try too scan the page & squirt it to you. Might work.