Great Schism By mmaloneystpats Mar 27, 1378 Pope Gregory XI (Rome) Apr 8, 1378 Urban VI (Rome) Period: Apr 8, 1378 to Oct 15, 1389 Urban VI (Rome) Sep 20, 1378 Antipopes Clement VII (Avignon) Period: Sep 20, 1378 to Sep 16, 1394 Antipopes Clement VII (Avignon) Nov 12, 1378 Beginning of the Great Western Schism Nov 2, 1389 Boniface IX (Rome) Period: Nov 2, 1389 to Oct 1, 1404 Boniface IX (Rome) Sep 28, 1394 Antipopes Benedict XIII (Avignon) Period: Sep 28, 1394 to Oct 11, 1423 Antipopes Benedict XIII (Avignon) Oct 17, 1404 Innocent VII (Rome) Period: Oct 17, 1404 to Nov 6, 1406 Innocent VII (Rome) Nov 30, 1406 Gregory XII (Rome) Period: Nov 30, 1406 to Jul 4, 1415 Gregory XII (Rome) Jun 26, 1409 Antipopes Alexander V (Pisa) Period: Jun 26, 1409 to May 3, 1410 Antipopes Alexander V (Pisa) Nov 15, 1410 Antipope John XXIII (Pisa) Period: Nov 15, 1410 to Dec 30, 1415 Antipope John XXIII (Pisa) Period: Nov 13, 1414 to Nov 13, 1418 council of Constance Nov 14, 1417 Martin V (Rome) Nov 12, 1418 Ending of the Great Western Schism
