The King of the Golden River (1841) by

The King of the Golden River or The Black Brothers: A Legend of Stiria by John Ruskin was originally written in 1841 for the twelve-year-old Effie (Euphemia) Gray, whom Ruskin later married. It was published in book form in 1851, and became an early Victorian classic which sold out three editions. In the "Advertisement to the First Edition", which prefaces it, it is called a fairy tale,