Not really - the current British royal house is german-descended. There are noble families in the UK with longer english/british pedigrees than the ~~Saxe-Coburg Gotha ~~ Windsor/Mountbatten family. But the current situation suits them better than rocking the boat.
A long time ago his clan beat out some other clans so that makes him king.
I’m pretty sure anyone is welcome to challenge his assertion of authority at any time by the same means.
Not really - the current British royal house is german-descended. There are noble families in the UK with longer english/british pedigrees than the ~~Saxe-Coburg Gotha ~~ Windsor/Mountbatten family. But the current situation suits them better than rocking the boat.