Margaret Gabrielle Vere Long (n?e Campbell; 1 November 1885 - 23 December 1952), who used the pseudonym Marjorie Bowen, was a British author who wrote historical romances, supernatural horror stories, popular history and biography. Her total output numbers over 150 volumes with the bulk of her work under the 'Bowen' pseudonym. She also wrote under the names Joseph Shearing, George R. Preedy, John Winch, Robert Paye. After The Viper of Milan (1906),...