Thanks to my facebook friend, Sophie Masson, for this tantilsing bit of news! Apparently a selection of these stories, myths and legends has been released, which were gathered around the same time the Grimm brothers were scouring the land for their own collection.
A whole new world of magic animals, brave young princes and evil witches has come to light with the discovery of 500 new fairytales, which were locked away in an archive in Regensburg, Germany for over 150 years. The tales are part of a collection of myths, legends and fairytales, gathered by the local historian Franz Xaver von Schönwerth (1810–1886)
While sifting through Von Schönwerth's work, Eichenseer found 500 fairytales, many of which do not appear in other European fairytale collections. For example, there is the tale of a maiden who escapes a witch by transforming herself into a pond. The witch then lies on her stomach and drinks all the water, swallowing the young girl, who uses a knife to cut her way out of the witch. However, the collection also includes local versions of the tales children all over the world have grown up with including Cinderella and Rumpelstiltskin, and which appear in many different versions across Europe.
The full story here: 5-hundred-fairytales-discovered-germany