A famous bearer is actress Grayson Hall (1922-85), best known for her Oscar-nominated role in The Night of The Iguana (1964) and for her work in the gothic soap opera Dark Shadows (1966-71).
As a surname, Richard "Dick" Grayson. Dick is best known as the first Robin, sidekick to Batman and founding member of the Teen Titans, but he has since grown up and now goes by "Nightwing".