Joannes de, active 1230 Sacro Bosco

Joannes de, active 1230 Sacro Bosco

Johannes de Sacrobosco was a medieval astronomer and mathematician active in the early 13th century who taught at the University of Paris. He is best known for his astronomy textbook "De sphaera mundi" (Tractatus de Sphaera), widely used in European universities for centuries.