Richard de Bury (1281-1345), Bishop of Durham and Chancellor of England, was born in Suffolk, and is chiefly known as author of the Philo-Biblon and as a great book-collector. He was tutor to the future Edward III. at Oxford, and formed there the largest private library then in existence. The Philo-Biblon commemorates his love of books. His library he left to Oxford, where he had been educated.