William of Marseille

William of Marseille was a thirteenth-century English academic, teaching in France. He is known for the medical-astrological treatise De urina non visa. The method is to use a horoscope to deduce properties of the urine of a patient for diagnosis, when the urine itself cannot be obtained. This book was still used at the University of Bologna in 1405.

Works
''From [http://www.mgh.de/~Poetae/Autorenliste/Autorenliste.pdf Liste lateinischer Autoren und anonymer Werke des 13. Jahrhunderts (ca. 1170-1320)]''
 * Astrologia
 * De urina non visa (1219)
 * Tabula de stellis fixis
 * Tractatus de meteoris (c. 1230)