The Celtic Revival (also referred to as the Celtic Twilight, or Celtomania) was a variety of movements and trends in the 19th and 20th centuries that saw a renewed interest in aspects of Celtic culture. Artists and writers drew on the traditions of Gaelic literature, Welsh-language literature, and so-called 'Celtic art'—what historians call Insular art (the Early Medieval style of Ireland and Britain). Although the revival was complex and multifaceted, occurring across many fields and in various countries in Northwest Europe, its best known incarnation is probably the Irish Literary Revival. Irish writers including William Butler Yeats, Lady Gregory, "AE" Russell, Edward Martyn, Alice Milligan. and Edward Plunkett (Lord Dunsany) stimulated a new appreciation of traditional Irish literature and Irish poetry in the late 19th and early 20th century.