Who wrote 'The Wild Swans at Coole'?

William Butler Yeats is an Irish dramatist, poet and critic. He wrote the preamble of Tagore's 'Gitanjali' in 1912, which later got nobel prize in 1913. W. B. Yeats got nobel prize in 1923. His famous poems: The Wild Swans at Coole, The Tower, The Winding Stair and Other Poems, The Resurrection, The Second Coming, The Cat and The Moon, The Lake Isle of Innisfree, Among School Children, The Lord of Harts, Falling of Leaves, A prayer for My Daughter, When You Are Old.
Source: Website Lecture and An ABC of English Literature.