- Stage: Appeared (as "Socrates") in the original Broadway production of Maxwell Anderson's "Barefoot in Athens".
- (1953) Stage: Appeared (as "John Tarleton") in the Broadway revival of 'George Bernard Shaw''s "Misalliance".
- (1936-37) Stage: Appeared in Maurice Colbourne's play, "Charles the King," at the Lyric Theatre in London, England, with 'Gwen Ffrangcon-Davies' (v), Morland Graham, Maurice Colbourne, Hugh Grant, Betty Hardy, Richard Watson and Noel Howlett in the cast. 'Motley' was art director. Herbert Menges was musical director.
- (1937) Stage: Appeared in the play, "Lovers' Meeting", at the Embassy Theatre in London, England, with Gerald Savory, Peggy Simpson and Marda Vanne in the cast. Margaret Webster was the director.
- (1959) Stage: Appeared in Samuel A. Taylor's play, "The Pleasure of his Company", at the Theatre Royal Haymarket in London, England, with Coral Browne, Nigel Patrick (also director), Burt Kwouk, Judith Stott, David Langton and Robin Hunter in the cast. Pierre Balmain was the costume designer.
- (1924) Stage: Appeared (as "Fifth Banker" / "An Officer") in "Man and the Masses" on Broadway. Tragedy. Written by Ernst Toller. Translated by Louis Untermeyer. Cast: Jacob Ben-Ami (as "The Nameless One, The Spirit of the Masses"), Marling Chilton (as "Third Working Man"), Sidney Dexter (as "Messenger Boy"), William Franklin (as "Second Banker"), Ullrich Haupt (as "The Man" / "The Woman's Husband"), Arthur Hughes (as "The Companion" / "A Dream Figure"), Mariette Hyde (as "Second Woman Prisoner"), Zita Johann (as "First Woman Prisoner"), Allyn Joslyn (credited as Allyn Morgan Joslyn; as "Second Working Man"), A.P. Kaye (as "First Banker"), Leonard Lean (as "Fourth Banker"), John McGovern (as "The Condemned One"), Maurice McRae (as "First Working Man"), Pauline Moore (as "A Working Woman"), Samuel Rosen (as "Fourth Working Man"), Erskine Sanford (as "Third Banker" / "A Priest"), Charles Tazewell (as "Sixth Banker"), Blanche Yurka (as "The Woman"). Produced by The Theatre Guild.