"No, not at all. First born is the heir in most families unless they prove themselves unfit. Some families don’t declare an heir until at least two children are over 17, three if they were born closely together," Theo explains, "because they’re waiting to see which child has proven themself more fit. I’m heir and not my half-sister solely because I’m older. Neither Morag or her younger brother are heir because they have an older sister. Muggles truly prioritise boys? Whatever for?"