Wow…so if *Cora* is the miller’s daughter rather than Regina as I originally thought, that makes Regina….the first born child that Rumpelstiltskin tries to claim in the original story! (In that version of the story, the miller’s daughter agrees to give him her firstborn in exchange for one more room full of spun gold for the king. When the child is born, Rumple says he will call off the deal if she can guess his name. Her servants overhear him chanting his name in the woods and inform her. When she reveals that she knows his name, he gets so angry that he breaks into pieces.)
I did notice in Skin Deep that Rumple and the Queen seemed to have almost an apprentice and master relationship going on, or at least one that existed in the past- like he used to be her teacher but then they had a falling out.