Sherwin, William (b. c. 1645, d. in or after 1709), engraver and inventor of a method of mezzotinting, the son of William Sherwin (1607–1690), a Church of England clergyman, and his wife, Dorothea Swan, was born at Wallington, Hertfordshire, where his father was rector, about 1645. Nothing is known of his training, and his first datable plate is a portrait prefixed to ...