Perhaps you'd have a go, then, when you have the opportunity. I've spent a great deal of time at the Bodleian site in the last few years, and the possibility that there are things there which can't be found in the usual ways is a worry. My suspicion is that your notes are wrong, but I'd like to be sure.

Mind you, I'm rather glad that I had to go looking elsewhere for a source for that broadside text. It turns out that the other song on the sheet, The sea-faring man, is a variant of The Husbandman and the Serving Man (Singing the Travels) that I'd never come across before.