Hamish Henderson took George and me to hear songs in a tinker camp near Aberdeen, in 1952. One of the girls sang a ballad with that refrain,"...and the swan she sweems sae bonnie-O." It's a poor recording as we had to run our Magnacorder with a car battery, and so her words are very hard to understand, but it's one of the well-known ballads. I'll try to find it and listen again- haven't heard those tapes in many years now, they're very brittle. I'm lookin for a home for them, and the L. of C. is interested, but no decision as yet.