Good to hear from another Clifton aficianado. Yes, I have a number of pieces of sheet music of Clifton songs, mostly with portrait fronts, including 'Dark Girl d.i.b', Paddle Your Own Canoe', Polly Perkins', 'Weepin Willer', Pulling Hard Against the Stream', Jones's Musical Party' and others. He seems to have had a great facility for writing songs that immediately took on a feral existence. I think he must have done a great deal of listening as a young man to capture the common voice as he did.
I share your interest in the burlesque ballads that seemed to peak in (but were already established by) the 1850s/6Os. My collection contains a number of them, with Jack Sharp, Sam Cowell, Robson etc all represented. There is much more work to be done on these singers and their songs.