クレティアン・ド・トロワ
In her capacity as a quest-bringer, the loathly lady can be found in the literature of the Holy Grail, including Chrétien de Troyes' "Perceval, the Story of the Grail", Wolfram von Eschenbach's "Parzival", and the Welsh Romance "Peredur son of Efrawg" associated with the "Mabinogion".