Since the twins are only half blood, does that mean that the royal family marry within? As in marrying their sisters/brothers? If they married their cousins then they wouldn’t be pure-bloods because the cousin’s other parent must not have royal blood (Unless the cousin’s parents were brothers and sisters)? Or is this concept for of a pure-blood = nobles only?
Since the twins are only half blood, does that mean that the royal family marry within? As in marrying their sisters/brothers? If they married their cousins then they wouldn’t be pure-bloods because the cousin’s other parent must not have royal blood (Unless the cousin’s parents were brothers and sisters)? Or is this concept for of a pure-blood = nobles only?