There is a melody very different from the one that most people (e.g. Shirley Collins, Silly Sisters, 10,000 Maniacs) sing, in a book by Roy Palmer, an English folklorist who has produced a number of excellent books of traditional British songs. I *think* it's in his "Everyman's Book of English Country Songs" but it might be another one. Anyway, it was collected in Kings Lynn by Vaughan Williams, and the tune just *oozes* eroticism. I sang it on a CD I made with Gordon Tyrrall a couple of years back, and one reviewer said it was "a song to do very rude things to". You can't ask more than that!