How Did Mrs. Patrick Campbell Die?

Beatrice Rose Stella Tanner, better known by her stage name Mrs Patrick Campbell or Mrs Pat, was an English stage actress, best known for appearing in plays by Shakespeare, Shaw and Barrie. These included Shaw's Pygmalion where she originated the role of Cockney flower girl Eliza Doolittle in the West End in 1914. She also toured the United States and appeared briefly in films.