(Henry's parents were both of dubious royal origin. He was literally a fluke getting the crown, and his wife, Elizabeth of York, had a better claim to be on the throne then he did).
ETA: I can't believe I thought of Henry VII first and not, you know, William The Conqueror who was also known as ... William the Bastard.
Henry VII has entered the chat
(Henry's parents were both of dubious royal origin. He was literally a fluke getting the crown, and his wife, Elizabeth of York, had a better claim to be on the throne then he did).
ETA: I can't believe I thought of Henry VII first and not, you know, William The Conqueror who was also known as ... William the Bastard.