Mythology, Celtic, in literature Literature and folklore 2 Celts in literature 1 Civilization, Celtic, in literature 1 English literature 1 English poetry--Celtic influences 1 Fantasy fiction, English 1 Folklore in literature 1 Heroes in literature 1 History 1 History and criticism 1 Intellectual life 1 Irish authors 1 Literature and anthropology 1 Literature and science 1 Mythology, Celtic 1 Occultism in literature 1 Primitivism 1 Primitivism in literature 1 Yeats, W. B. (William Butler), 1865-1939 1