In the Arthurian romance of Tristan de Léonais, Sadoc, the nephew of Joseph of Arimathea, married Chelinde, the daughter of the King of Babylon.  His brother ravished Chelinde, and after killing him, Sadoc departed with his wife for another land.  Terrible storms arose, and as the sailors believed that he was the Jonah, they cast him overboard.  He was not drowned, but reached land and lived for three years with a hermit.
    In the meantime Chelinde became the wife of the King of Cornwall, who exposed Apollo, her son by Sadoc, on account of an evil dream, which prophesied that he would die at his hands.  In after years the prediction was not only verified, but the unfortunate youth killed his own father in a combat and married his mother.  In these latter instances we have almost certainly purely literary imitations of the Oedipus story. (Sohrab and Rustem, Potter, 1902)