Sybil Thorndike, English actress (d. 1976)
Dame Agnes Sybil Thorndike, Lady Casson (24 October 1882 – 9 June 1976) was an English actress who toured internationally in Shakespearean productions, often appearing with her husband Lewis Casson. Bernard Shaw wrote Saint Joan specially for her, and she starred in it with great success. She was made Dame Commander of the Order of the British Empire in 1931, and Companion of Honour in 1970.