Theophilus, of Edessa, 695-785

[Astrologer, historian, and translator. He was chief astrologer to the Caliph al-Mahdī in Baghdad, and he wrote Arabic treatises on astrology, a book on military forecasts, and translations from Greek into Syriac.]

found: Theophilus of Edessa's chronicle and the circulation of historical knowledge in late antiquity and early Islam, 2011:back cover (astrologer in the court of the Muslim caliphs from the 750s to the 780s)

found: Wikipedia, 8 Nov. 2011:Theophilus of Edessa page (Theophilus of Edessa (695-785 CE), also known as Theophilus ibn Tuma and Thawafil ; Greek medieval astrologer and scholar in Mesopotamia)

found: "Theophilus of Edessa," The Oxford Dictionary of Late Antiquity (online), viewed on September 5, 2024("Syriac astrologer, historian, and trilingual translator"; chief astrologer to the Caliph al-Mahdī (775-85) in Baghdad; wrote several treatises in Arabic on astrology, and a book on military forecasts, translations from Greek into Syriac) - https://www.oxfordreference.com/display/10.1093/acref/9780198662778.001.0001/acref-9780198662778-e-4713

[Astrologer, historian, and translator. He was chief astrologer to the Caliph al-Mahdī in Baghdad, and he wrote Arabic treatises on astrology, a book on military forecasts, and translations from Greek into Syriac.]