William Butler Yeats (13 June 1865 - 28 January 1939) was an Irish poet, dramatist, prose writer and one of the foremost figures of 20th-century literature. A pillar of the Irish literary establishment, he helped to found the Abbey Theatre, and in his later years served two terms as a Senator of the Irish Free State. He was a driving force behind the Irish Literary Revival along with Lady Gregory, Edward Martyn and others. Yeats was born in Sandymount, Ireland, and educated there and in London. He spent childhood holidays in County Sligo and studied poetry from an early age, when he became fascinated by Irish legends and the occult.