talking horse (or mule, or donkey, given by a spirit, God, Virgin Mary, or the Devil), so - Krappe deduced - the Argo ship must have been originally given by a deity, and served to warn Jason against dangers. Also, Krappe pointed that the king, in the tale type, sends the hero to find him precious treasures associated with gold, and the titular golden-haired princess, who is sometimes associated with the Sun - like Medea, descendant of Sun god Helios. Lastly, the princess of the tale type submits the hero and the king to an experiment of rejuvenating, which involves both men entering a burning oven, or bathing in boiling milk or oil. Krappe, to conclude his comparison, cited that ancient authors Pherecydes of Syros and Simonides reported variations wherein Medea applies a similar rejuvenating treatment to Jason himself, instead of Pelias. A line of scholarship believes that the tale type ATU 531 also shows parallels with the Celtic chivalric romance of Tristan and Iseult, like French Emmanuel Cosquin and German scholars and . They argued for the presence of motifs of the tale type in Tristan and Isolde: in some versions of the Celtic romance, a little bird (a swallow) flies to King Mark's castle with a strand of golden hair in its beak; he then becomes interested in finding its owner. German folklorist Felix Liebrecht seemed to agree with Köhler's assessment of the connection between the chivalric romance and the tale type, but complemented his analysis. Liebrecht located the motif of the lock of golden hair in the Ancient Egyptian story of Tale of Two Brothers: after being exiled from home, Batu is given a wife by the gods. One day, the Nile river washes a lock of her hair to the court of the Pharaoh, who falls in love with its owner. The Pharaoh's wise men tell him that its owner is the daughter of the Sun god, lord of the celestial realms and of the waters. Another connected story, ascribed to a Jewish legend contained in the , was published by German theologian Christoph Helvig, in 1602. In this tale, an impious king is advised by his councillors to take a wife, when a bird appears with a golden hair in its beak. He then summons a court favourite, Rabbi Chanina, to find the owner of the golden hair. With the help of grateful animals (lacking