Harley Granville-Barker was an English actor, director, playwright, manager, critic, and theorist. After early success as an actor in the plays of George Bernard Shaw, he increasingly turned to directing and was a major figure in British theatre in the Edwardian and inter-war periods. As a writer his plays, which tackled difficult and controversial subject matter, met with a mixed reception during his lifetime but have continued to receive attention.

George Bernard Shaw, known at his insistence as Bernard Shaw, was an Irish playwright, critic, polemicist and political activist. His influence on Western theatre, culture and politics extended from the 1880s to his death and beyond. He wrote more than sixty plays, including major works such as Man and Superman (1902), Pygmalion (1913) and Saint Joan (1923). With a range incorporating both contemporary satire and historical allegory, Shaw became the leading dramatist of his generation, and in 1925 was awarded the Nobel Prize in Literature.