Samuel John Waddell (1878-1967) was an Irish playwright and actor, born in Japan. He attended Queen's College, Belfast, and the Royal University of Ireland. He helped to found the Ulster Literary Theatre in 1904, and thence began to act and write under the pseudonym Rutherford Mayne. His first play was The Turn of the Road (1907). His other plays include The Troth (1908), The Drone (1909), Red Turf (1911), Peter (1930) and The Bridgehead (1934).