Sir William Catesby is one of Richard’s chief supporters and an important figure in his coup.
He attempts to win Hastings over to Richard’s cause with a quite stunning lack of subtlety, and fails. He is one of the main actors in the scene that convinces the citizens that Richard is reluctant to take the throne. He later arranges for the marriage of Clarence’s daughter to a nobody and starts spreading the rumors that make the Lady Anne’s death less of a surprise. A close attendant on Richard, he follows him to the battle of Bosworth and attempts to help him to flee when it becomes clear that all is lost, only to see his offer refused. Catesby is a very loyal man, staying faithful to Richard even when the latter mistreats him.