Shaw, often marginalized within Irish theatre history as the author ofJohn Bull’s Other Island, his one play set in Ireland which was rejected by the Abbey, is a much more persistent and influential presence than has generally been acknowledged.John Bullitself, a pungent commentary on the politics of its times, was in fact often performed in Ireland, including at the Abbey, and it was followed by the one-actO’Flaherty VCand ‘The Tragedy of an Elderly Gentleman’, one of the parts ofBack to Methuselah, both of them with an Irish setting. Shaw’s form of discussion play of ideas had a notable impact on later Irish writers, particularly Seán O’Casey, but also Denis Johnston and Teresa Deevy, giving him a key role in the development of modern Irish theatre.