There's two royal families - the muggle one, of course. Then the wizarding one. This story focuses on Xander Greyback -Queen Anastasia Bennett's only son- and Christina Malfoy. Who are they? That's easy. The king and queen of the wizarding world. Xander is crowned king shortly after the Battle Of Hogwarts, and Christina is crowned queen on the day they marry. The couple have one son -Luca- though he is not biologically Crystal's. It is strongly believed for years that Queen Christina -or, as she prefers, Crystal- can't have children. But maybe, just maybe, that assumption was wrong.