Oh, this should be fun. More bones with some meat this time to throw into the cauldron of story.
We shall have to look at the structuralists of the last century who amassed their versions of fairy stories and consider their methods in determining the "prime" or "first" version out of which all others derived. Except we would be working forwards.
Or, we could all just dance on the head of a pin. It would be a springle ring dance of course.