"Buttercup Joe" can be picked up in a number of places, like Cambbridgeshire and Essex, where I heard it. It seems to be like "Susannah's a funniful man", lots of people know it but they think their family has a monopoly. It may have been done on MusicHall butI think it yo-yoed between musichall and tradition. Some of thw lines quoted above remind me of "Cushy Butterfield". GS