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Bonatti, Guido - astrologer (a.k.a. Bonatus: c.1202-1296)

Professor of Astrology at Bologna, adviser to various Italian counts and princes, and one of the most celebrated astrologers of the medieval era. His greatest astrological work was Liber Astronomiae (‘Book of Astronomy’), which was recently translated into English by Benjamin Dykes. This is a full exposition of astrology in ten treatises, the sixth of which concerns ‘questions’.  Lilly acknowledged Bonatti as one of his sources and many of the theoretical passages in Lilly’s horary volume are direct translations from Bonatti. 

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