The Green Knight (fairy tale) In all, they marry. The Green Knight (fairy tale) The Green Knight is a Danish fairy tale, collected by Svend Grundtvig (1824-1883) in "Danish Fairy Tales" (18??) and by Evald Tang Kristensen (1843-1929) in "Eventyr fra Jylland" (1881). Andrew Lang included a translation of Kristensen's version in "The Olive Fairy Book" (1907). This tale combines Aarne-Thompson type 510A with type 425N, the bird husband, and type 432, the prince as bird. Others of the first type include "Cinderella", The Sharp Grey Sheep, The Golden Slipper, The Story of Tam and Cam, Rushen Coatie, Fair, Brown and Trembling, and Katie Woodencloak;
Fairy tale existed for thousands of years before the literary forms, there is no pure folktale, and each literary fairy tale draws on folk traditions, if only in parody. This makes it impossible to trace forms of transmission of a fairy tale. Oral story-tellers have been known to read literary fairy tales to increase their own stock of stories and treatments. The oral tradition of the fairy tale came long before the written page. Tales were told or enacted dramatically, rather than written down, and handed down from generation to generation. Because of this, the history of their development is necessarily obscure