M6465 Bishop in an historiated initial, Guido de Baysio, Bologna, c. 1320

M6465 Bishop in an historiated initial, a cutting from Guido de Baysio, Rosarium Decretorum, decorated manuscript on vellum, Italy, Bologna, c. 1320, 

Size: 11 x 4 1/2 inches

Commentary: From a commentary of Guido de Baysio on the Decretum of Gratian, the principal medieval text for the study of canon law.  The author taught privately at Bologna from 1283 until 1301, eventually obtaining a chair in canon law there.  He was named Archdeacon of the Church of Bologna in 1296.  After being made a papal chaplain he moved to Avignon with the papal court in 1305.  The rosarium, his principal work, was completed in 1300.