debils, this is really interesting, and I think that you and your family should feel very proud of your ggg grandfather.
Sam Fone had a wonderful version of 'The Death of Queen Jane' which Baring-Gould collected from him. The text and tune are given on Martin Graebe's website here The Death of Queen Jane Child also quotes this as a variant of Ballad 170 in his collection where it is noted as being communicated to Child by the Rev Sabine Baring-Gould from the recitation of Samuel Force (which must be a transcription mispelling of your ggg grandfather's name.)

I would be more than delightd to know whether anyone in your family still sings this particular song.