Dame Gladys Constance Cooper, DBE (18 December 1888 – 17 November 1971) was an English actress whose career spanned seven decades on stage, in films and on television. Beginning on the stage as a teenager in Edwardian musical comedy and pantomime, she was starring in dramatic roles and silent films by World War I. She also became a manager of the Playhouse Theatre from 1917 to 1933, where she played many roles. Beginning in the early 1920s, Cooper was winning praise in plays by W. Somerset Maug...