The King of Ireland's Son is a children's novel published in Ireland in 1916 written by Padraic Colum, and illustrated by Willy Pogany. It is the story of the eldest of the King of Ireland's sons, and his adventures winning and then finding Fedelma, the Enchanter's Daughter, who after being won is kidnapped from him by the King of the Land of Mist. It is solidly based in Irish folklore, itself being originally a folktale.