Although the mountain's name is typically taken to refer to the mythological giant Idris, who was said to have been skilled in poetry, astronomy and philosophy, it has sometimes been mistranslated as Arthur's Seat, in reference to King Arthur (and to the hill of the same name in Edinburgh), an idea used by author Susan Cooper in her book The Grey King. However, this translation is mistaken and there is no etymological or traditional connection between Idris and Arthur.