William Murray Graydon (1864-1946) was a British author. His works include: The River of Darkness (1890), In the Days of Washington: A Story of the American Revolution (1896), The Traitor Dragoon (1897), Exiled to Siberia (1897), The Cryptogram (1898), In Friendship"s Guise (1899), In Barracks and Wigwam (1900), The Princess of the Purple Palace (1901), The Camp in the Snow (1902), In Fort and Prison (1903), Canoe Boys and Campfires (1907) and The Island Secret (1935).