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Mar 27, 1378
Pope Gregory XI
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Apr 8, 1378
Pope Urban VI
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Period: Apr 8, 1378 to Oct 15, 1389
Pope Urban VI (Rome)
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Sep 20, 1378
Antipope Clement VII of (Avignon)
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Period: Sep 20, 1378 to Sep 16, 1394
Antipope Clement VII (Avignon)
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Nov 12, 1378
Beginning of the Great Western Schism
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Nov 2, 1389
Pope Boniface IX
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Period: Nov 2, 1389 to Oct 1, 1404
Pope Boniface IX (Rome)
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Sep 20, 1394
Antipope Benedict XIII of (Avignon)
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Period: Sep 28, 1394 to May 23, 1423
Antipope Benedict XIII of (Avignon)
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Oct 17, 1404
Pope Innocent VII
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Period: Oct 17, 1404 to Nov 6, 1406
Pope Innocent VII (Rome)
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Nov 30, 1406
Pope Gregory XII (Rome)
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Period: Nov 30, 1406 to Jul 4, 1415
Pope Gregory XII (Rome)
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Jun 26, 1409
Antipope Alexander V of (pisa)
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Period: Jun 26, 1409 to May 3, 1410
Antipope Alexander V of (pisa)
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Nov 15, 1410
Antipope John XXIII of (Pisa)
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Period: Nov 15, 1410 to Dec 30, 1415
Antipope John XXIII of (Pisa)
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Period: Nov 12, 1414 to Nov 12, 1418
Council of Constance
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Nov 12, 1418
Ending of the Great Western Schism