Most childrens' songs didn't start out as childrens' songs, e.g.: "Polly/Molly put the kettle on" appeared shortly before its tune appeared as "Jenny's Bawbie", in 'The Scots Musical Museum', #496, 1797. A late copy "Polly put the kettle one" is on the Bodley Ballads website, Search/Shelfmark Harding B 11(4332) Somewhere I've seen an old copy of "Hey Betty Martin, tiptoe fine", but can't recall where. It's not "My Eye and Betty Martin" in 'The Universal Songster', I, p. 360, 1825.