That's a lot of great info there, Mick.

Though no tune has survived for Blanche Frigate (as RoyP tells us in OBSS) it does go very well to the Earsdon Calling on Song and fits the spirit of the song well.

Isn't 'The Saucy Scylla' just another version of 'Fancy Frigate' and as such to the tune of 'Derry Down' which is well covered in Simpson?