Okay Susan,
Perhaps you could just once again list the proof for 'Jacobite ballad' so we can see what your starting point is clearly?

As I hope I've put forward, the dividing line (if any) between serious ballad and burlesque is a very fine one. Sometimes the performer on stage didn't need to alter a single word, the comedy was all in the vocalisation, gesture and costume. 'Ah my Love's dead' is a prime example. The picture of Cowell on the cover would leave you in no doubt as to what was intended but the text inside the sheet is no different from serious versions going back to the 17th century and forward to the modern day.

My opinion on both Lovel and G/Collins is that they existed as burlesque quite early on, but that doesn't exclude the possibility of an even earlier, longer serious ballad in either/both cases.