I think Sweeny's Men or the Bothy Band did a great recording of The Raggle Taggle Gypsy, years ago. It's in the database under Gypsy, you'll find The Gypsy Laddie (Johnny Faa- Child #200), Black Jack Davey and Gypsy Davey with some info. In 1624 a gypsy chieftain with the common Romany name, Johnny Faa was hung by Scottish officals. No connection was ever established between any gypsy and a wife of the Earl of Cassilis as recorded in song.