Great Schism By jlelandstpats Period: Nov 10, 1370 to Nov 10, 1378 Pope Gregory XI Nov 11, 1370 Pope Gregory XI Period: Nov 10, 1378 to Nov 10, 1389 Pope Urban Period: Nov 10, 1378 to Nov 10, 1394 Antipope Clement VII Nov 11, 1378 Antipope Benedict XII Nov 11, 1378 Pope Urban Nov 11, 1378 Antipope Clement VII Nov 11, 1378 Start of the Great Western Schism Period: Nov 10, 1389 to Nov 10, 1404 Pope Boniface IX Nov 11, 1389 Pope Boniface IX Period: Nov 10, 1394 to Nov 11, 1394 Antipope Benedict XII Period: Nov 10, 1404 to Nov 10, 1406 Pope Innocent VII Nov 11, 1404 Pope Innocent VII Period: Nov 10, 1406 to Nov 10, 1415 Pope Gregory XII Nov 11, 1406 Pope Gregory XII Nov 11, 1409 Antipope Alexander V Period: Nov 11, 1409 to Nov 11, 1410 Antipope Alexander V Nov 11, 1410 Antipope John XXIII Period: Nov 11, 1410 to Nov 11, 1415 Antipope John XXIII Nov 11, 1414 Council of Constant Period: Nov 10, 1417 to Nov 10, 1431 Pope Martin V Nov 11, 1417 Pope Martin V Nov 11, 1417 End of the Great Western Schism
