Perchta: A birch goddess. She was a patron of spinning, and led the Wild Hunt during the winter. Some of her worshippers comprised a Mystery cult, and were called Perchten. They became possessed by the dead, or by the Goddess herself, in a Ritual apparently related to her procession as leader of the Wild Hunt. She seems almost certainly to be another name for Bertha. Both names are derived from the name for birch.Books in PDF format to read:
John Dee - De Heptarchia MysticaFranceska De Grandis - Be A Goddess
Franceska De Grandis - Goddess Initiation