William Byron, 5th Baron Byron, English lieutenant and politician (d. 1798)
William Byron, 5th Baron Byron (5 November 1722 – 19 May 1798), was a British nobleman, peer, politician, and great-uncle of the poet George Gordon Byron who succeeded him in the title. As a result of a number of stories that arose after a duel, and then because of his financial difficulties, he became known after his death as "the Wicked Lord" and "the Devil Byron".