The earliest version I've heard is by Joseph Taylor of Saxby-all-Saints in Lincolnshire, recorded on cylinder by Percy Grainger in about 1908.

That, I suspect, is the source for subsequent versions, though the chorus used by The Watersons is of their own invention, I think.

And here am I, sat at the keyboard, but did I have the wit to go and get the recording out before starting? Of course not.

I'll check out the lyric and post it here in due course.

Lhieuish,

Bobby Bob