Priscilla Costello is a teacher, writer, and counseling astrologer based in Toronto. She frequently travels to the U.S. to see clients and lecture. She has been instrumental in the organization of Canadian astrology and currently serves on the Advisory Board of NCGR. Her Master's thesis on Gnosticism and Jungian psychology (1993) won the Master's Scholar Award from the NE Association of Graduate Schools. She is founder and Director of the New Alexandria, a center for spiritual and esoteric studies.