The Bayeux Tapestry was all about an old English king and his possible successors to the throne. The story goes something like this.
King Edward is old and will die soon and he has no direct heir to the throne. The three candidates are;
A. Harold the titleless, his half brother
B. William the Bastard, duke of
C. Harald the Severe, king of
For reasons of his past, Edward selects option B: William the Bastard. Edward sends Harold to tell ill bill that he will be the heir to the throne.(May not the wisest choice sending an heir to an heir, they really didn't get along very easily.) Harold embarks toward
William, who doesn’t trust Harold to allow him2 to obtain the throne, makes him swear on holy relics that he won't take the throne. With his oath, William allows Harold to return to
Billy & Harry battle violently, until Harold is miraculously hit in the eye with an arrow! (I personally think it was because he broke his oath) William the Bastard got a title change to William the Conqueror, A significant improvement, I say.