"A pureblood cannot try to become king. You will always just be a prince and that's me being generous because our grandmother would've sent you away from being in front of her sight. Would you like me to step off the stage and see if the bloodstones change their mind? This must be embarrassing for you." Even though Wesley had spent a lot of time watching Xavier, he was missing something. He didn't have the experience and schooling about vampires Xavier had in the old days from his grandmother.
Xavier hated this back then but now it was paying off. His grandmother would smack him over the head for looking bored when it turned out to be useful.