Great Western Schism By tori-the-best 1377 Death of Pope Gregory XI 1378 Pope of Rome Urban VI 1378 Antipope of Avignon Clement VII Period: 1378 to 1389 R. Urban VI Period: 1378 to 1394 A. Clement VII 1389 Pope of Rome Boniface IX Period: 1389 to 1404 R. Boniface IX 1394 Antipope of Avignon Benedict XIII Period: 1394 to 1423 A. Benedict XIII 1404 Pope of Rome Innocent VII Period: 1404 to 1406 R. Innocent VII 1406 Pope of Rome Gregory XII Period: 1406 to 1415 R. Gregory XII 1409 Antipope of Pisa Alexander V Period: 1409 to 1410 P. Alexander V 1410 Antipope of Pisa John XXIII Period: 1410 to 1415 P. John XXIII Period: 1414 to 1418 Council of Constance 1417 Pope Martin V elected
