Backing Jon, although the song appears to be unique to the Copper Family, it is obviously from an earlier era and is typical of the not a few glees in the family repertoire as Jon will tell you. I have been researching broadside ballads for 50 years and I would have picked up on it if I'd have come across it as I used to sing it in the 60s. If you want to find an earlier version the best place to look is in glee/catch collections. Although it has some of the characteristics of the stuff sang in the pleasure gardens I have looked through thousands of their songsters and again it didn't turn up, yet! There were hundreds of glee clubs all over the country from the 18th to the 20th century and many of them were purely local and made up their own glees.