The Great Schism and The Council of Constance By Jgoselin2002 Sep 7, 1303 Philip IV Humiliation of Boniface VIII at Anagini Period: 1308 to 1377 The Avignon Papacy Period: 1378 to 1417 The Great Schism Mar 27, 1378 Death of Gregory XI Apr 8, 1378 Election of Urban VI Sep 20, 1378 Election of Clement VII Period: 1409 to 1409 Council of Pisa Period: 1414 to 1418 Council of Constance Sep 11, 1417 Election of Martin V