Sometimes this appears to be a deliberate switch: The Brothers Grimm, having put in their first editions versions of Snow White and Hansel and Gretel where the villain was the biological mother, altered it to a stepmother in later editions, perhaps to mitigate the story's violence.[10] Another reason for the change from a villainous mother to a villainous stepmother may have been the belief that mothers were sacred, as well as the belief that people would not believe that a mother could harbor such ill-will and animosity toward their child.[11][12] The Icelandic fairy tale The Horse Gullfaxi and the Sword Gunnfoder features a good stepmother, who indeed aids the prince like a fairy godmother, but this figure is very rare in fairy tales.