George Bernard Shaw, William Butler Yeats, and Sean O'Casey were all Dublin-born dramatists. George Bernard Shaw was an Irish playwright, critic, polemicist, and political activist who wrote more than sixty plays during his lifetime. William Butler Yeats was an Irish poet, dramatist, and one of the foremost figures of 20th century literature. Sean O'Casey was an Irish dramatist and memoirist whose works are known for their realistic depictions of the working class in Ireland. All three of these writers were born in Dublin and have had a lasting impact on the world of literature.