This map depicts the general pattern of allegiances during the Great Schism (1378-1417), when western church was split between two legally-elected popes, one seated in Rome, the other at the papal residence in Avignon, in southern France. The French monarchy tended to support the Avignonese pope, as did most of the Iberian kingdoms, while princes of the Holy Roman Empire, Italy, and northern Europe (including England) supported the cause of Rome.


Source: Map Central at Bedford St. Martins.