Im just so confused, at the moment... Lol! Is this the same Rookwood? Is he Muggle born/Half blood?
Why Cinderella? It seems unusual for a boy to love that story so much. I think if his father scolded him at the end for believing in fairytales then that might remind us of who Rookwood became. Hope that helped. :)

Very interesting little story you have here. It's quite cute, but also a little sad as we know what happens to him...