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