For royals trying to usurp your own family is practically tradition. William the Conqueror's sprogs, William and Robert, used to duke it out on the battlefields of Normandy until one of the bishops asked despairingly but where will you find another brother if you kill this one off? Elizabeth I and sister 'Bloody' Mary were hardly on Christmas card terms. Even Richard 'Quasi' III managed to stuff two of his nephews up a chimney somewhere, if the old stories are to be believed, and I do, because facts are boring.
I like to think all of Harry's ancestors are looking down on him completely bemused and just thinking what a big girl's blouse he is. If you're going to usurp your brother at least be upfront about it and do it properly. Also, ancestral pain?? Think your predecessors may know a thing or two about that. Half sister tried to set you on fire? Someone nicked your entire kingdom and your wife while you were making an alliance with the Flems? Assassination by lampreys? Harry, you don't know you're born. In the old days you'd have been pre-emptively beheaded by the middle child, or sent off on a Crusade wearing a 'Rule Brittania' t-shirt.
Sure, you want to wear the shiny hat and sit in the big chair and make your brother go and live in France. It's okay, just admit it. Stop watching the Crown and put the Lion in Winter on. Royal families have been doing this kind of thing for years, it's your version of a hobby. At least none of them tried to usurp their siblings by talking about their feelings. The absolute embarrassment of it.