Medieval Astrology Guide is maintained and authored by Texas based astrologer Ryhan Butler. Ryhan has studied classical astrological techniques with an emphasis on medieval astrology for a decade. He has lectured locally and as a part of national conferences, working to spread the techniques of medieval astrology to those who would otherwise not encounter them or may not immediately see their value. In 2014, Ryhan successfully completed Lee Lehman’s Master Course in Medical Astrology and began his studies in herbalism and the relationship between medicinal plants and the planets and has received certification through the Herbal Academy. He is also an active member of the Association for Young Astrologers and served on the steering committee of the Association for Astrological Networking from 2015-2019.