Dion Fortune was the pen-name of Violet Mary Firth (Dec. 6, 1890-Jan. 1946). She is well known for her many books relating to ceremonial magick. She was a member of the Hermetic Order of the Golden Dawn but broke with the society after a quarrel with Moina Mathers, widow of founder MacGregor Mathers. She established her own magical order, the Fraternity of the Inner Light. During World War II, she and her followers enlisted the aid of the archangels against Hitler's Luftwaffe. A powerful psychic and medium, she considered herself a Priestess of the Great Goddess.