The narration of the folk tale made it more interesting.
In fact, the whole of the Lanzelet has much more the character of a fairy or folk-tale than that of a knightly romance.
What appears the most probable solution is that which regards Lancelot as the hero of an independent and widely diffused folk-tale, which, owing to certain special circumstances, was brought into contact with, and incorporated in, the Arthurian tradition.
Originally, the story of Perceval was of the character of a folk-tale, and that one of remarkable importance and world-wide diffusion.
The coarse myth told by Ovid, in which Anna plays a trick on Mars when in love with Minerva, is probably an old Italian folk-tale, poetically applied to the persons of these deities when they became partially anthropomorphized under Greek influence.