Paul C. Doherty (born 1946, Middlesbrough) is an English writer, with a doctorate in history from the University of Oxford, who writes historical mysteries and novels under the pennames Anna Apostolou, Michael Clynes, Ann Dukthas, C. L. Grace, Paul Harding, and Vanessa Alexander. Doherty is the author of several acclaimed mystery series including The Sorrowful Mysteries of Brother Athelstan, the Hugh Corbett medieval mysteries, and the Canterbury Tales of mystery and murder. He lives in England and has been the Headmaster at Trinity Catholic High School for nearly 25 years.