Doctrine
Debates over papal authority, council superiority, reform and sacramental life intensify amid institutional crisis.
Period 12 of 20 · 1300–1517
Late Middle Ages and Conciliarism
Plague, war, fiscal strain and papal residence at Avignon formed the background to the Western Schism. Councils restored unity but generated theories placing a council above the pope. Reform movements were numerous before 1517, though they did not achieve a universal settlement of doctrinal and institutional grievances.
Period anatomy: how to read this period
Institutions
Avignon administration, rival obediences, universities and general councils seek to restore unity.
Worship and sacramental life
Devotional vitality, confraternities and local cults coexist with demands for clerical reform.
Civil and social order
Plague, war, fiscal pressure and dynastic politics strain ecclesiastical credibility and communication.
Principal historiographical tension
The councils that ended the schism must be distinguished from conciliarist theories later rejected by Catholic ecclesiology.
Chronology: the period’s chronological spine
The period emerges from Scholasticism and Mendicant Orders and opens toward Protestant Revolution. The ten entries below supply the sequence rather than a pile of disconnected biographies.
- 1309–1377Avignon Papacy
From 1309 the popes resided at Avignon amid French influence, administrative expansion and Italian instability.
- 1378–1417Western Schism
After the disputed election of 1378, rival obediences followed popes in Rome and Avignon, later joined by Pisa.
- 1409Council of Pisa
Cardinals from both obediences attempted to end the schism by deposing Gregory XII and Benedict XIII and electing Alexander V.
- 1414–1418Council of Constance
Constance ended the Western Schism through the resignation of Gregory XII, deposition of John XXIII and eventual election of Martin V.
- 14th–15th centuriesConciliarism
Conciliarism proposed that a general council could exercise authority over the pope, especially in emergency.
- 15th centuryHussite Movement
Jan Hus drew on Czech reform concerns and Wycliffite ideas, condemning clerical abuses and challenging authority.
- 1431–1449Council of Basel and Its Crisis
Basel began as a reform council but clashed with Eugene IV over transfer, papal authority and reunion with the Greeks.
- 1438–1445Council of Florence and Reunion Efforts
Greek and Latin delegations negotiated procession of the Holy Spirit, purgatory, Eucharistic bread and papal primacy.
- 1453Fall of Constantinople
Mehmed II captured Constantinople in 1453 after a prolonged siege.
- 14th–early 16th centuriesLate Medieval Reform Movements
Observant movements, confraternities, preaching, humanism and episcopal initiatives reveal substantial reform before Luther.
- c. 1096–1492Jews under Christian Rule: Protection, Restriction and Persecution
Jewish life under medieval Christian rulers combined protected legal status, economic and social restriction, theological polemic, papal protection formulas, local coexistence, forced disputations, mob violence and expulsions.
Interactive dossier guide: Ten dossiers
11 dossiers
Avignon Papacy
From 1309 the popes resided at Avignon amid French influence, administrative expansion and Italian instability. The curia became more centralized and fiscally sophisticated, provoking criticism even though the popes were not simply prisoners of France.
Documented historical synthesisAvignon
Western Schism
After the disputed election of 1378, rival obediences followed popes in Rome and Avignon, later joined by Pisa. Saints and theologians could support different claimants in good faith; the crisis concerned identification of the true pope, not acceptance of multiple legitimate papacies.
Documented historical synthesisRome, Avignon and Europe
Council of Pisa
Cardinals from both obediences attempted to end the schism by deposing Gregory XII and Benedict XIII and electing Alexander V. Because neither claimant accepted the council's authority, Pisa produced a third obedience and intensified the canonical problem.
Documented historical synthesisPisa
Council of Constance
Constance ended the Western Schism through the resignation of Gregory XII, deposition of John XXIII and eventual election of Martin V. Haec sancta became central to conciliarist controversy, while the condemnation and execution of Jan Hus remains a distinct moral and legal question.
High documentary densityConstance
Conciliarism
Conciliarism proposed that a general council could exercise authority over the pope, especially in emergency. Moderate theories of representation differed from radical superiority claims; papal restoration and later teaching rejected conciliarism as a permanent constitutional principle.
Documented historical synthesisWestern Europe
Hussite Movement
Jan Hus drew on Czech reform concerns and Wycliffite ideas, condemning clerical abuses and challenging authority. After his execution, Bohemia entered religious war; Utraquist, Taborite and Catholic positions must be distinguished.
Documented historical synthesisBohemia
Council of Basel and Its Crisis
Basel began as a reform council but clashed with Eugene IV over transfer, papal authority and reunion with the Greeks. Its later deposition of the pope and election of Felix V marked the collapse of radical conciliarism.
Documented historical synthesisBasel and elsewhere
Council of Florence and Reunion Efforts
Greek and Latin delegations negotiated procession of the Holy Spirit, purgatory, Eucharistic bread and papal primacy. The decree of union was signed but failed to secure durable reception in the East, where political pressure and popular opposition were decisive.
High documentary densityFerrara and Florence
Fall of Constantinople
Mehmed II captured Constantinople in 1453 after a prolonged siege. The fall ended the Byzantine Empire, altered Orthodox life under Ottoman rule and intensified western reflection on crusade, reunion and Greek learning.
Documented historical synthesisConstantinople
Late Medieval Reform Movements
Observant movements, confraternities, preaching, humanism and episcopal initiatives reveal substantial reform before Luther. Abuses in benefices, finance and clerical discipline were real, but the late medieval Church was not simply spiritually dead.
Documented historical synthesisWestern Europe
Jews under Christian Rule: Protection, Restriction and Persecution
Jewish life under medieval Christian rulers combined protected legal status, economic and social restriction, theological polemic, papal protection formulas, local coexistence, forced disputations, mob violence and expulsions. The record cannot be reduced either to uninterrupted tolerance or to one uniform policy of persecution.
Contested event with partisan sourcesWestern and Central Europe; Iberia
Three guided study paths
Doctrine and controversy
Read the dossiers whose categories concern councils, doctrine, heresy and ecclesiology, then open the linked conciliar or patristic texts.
Institutions and lived religion
Follow papacy, episcopate, religious life, universities, missions, liturgy and law as institutions whose concrete operation can be documented.
Church and world
Compare ecclesial purpose with empire, kingdom, war, migration, economy and social change without reducing one perspective to the other.
Source gateway
Primary witnesses
- Acta Concilii Constantiensis, relevant volume
Contributes a datable witness whose genre and relation to the event must be established before drawing conclusions. Here it bears directly on “Avignon Papacy”. The cited witness is Acta Concilii Constantiensis, relevant volume; its precise wording, date and transmission govern the claim for which it is used.
- Conciliorum Oecumenicorum Decreta, Constance–Florence
Provides the formal wording, procedural act or canon. It must be read apart from later summaries and from speeches never promulgated. Here it bears directly on “Avignon Papacy”. The cited witness is Conciliorum Oecumenicorum Decreta, Constance–Florence; its precise wording, date and transmission govern the claim for which it is used.
- Theoderic of Niem, De schismate
Supplies argument, interpretation or pastoral practice from a named witness within the controversy or community. Here it bears directly on “Avignon Papacy”. The cited witness is Theoderic of Niem, De schismate; its precise wording, date and transmission govern the claim for which it is used.
- Letters of Catherine of Siena, relevant letter
Reveals contemporary aims, information and conflict, while preserving the limits and partial knowledge of its author. Here it bears directly on “Avignon Papacy”. The cited witness is Letters of Catherine of Siena, relevant letter; its precise wording, date and transmission govern the claim for which it is used.
Modern research
- Francis Oakley, The Conciliarist Tradition
Francis Oakley: Consult this title for the wider period and for disagreements over causation, terminology and reception connected with the dossier. For Avignon Papacy, the bibliographical entry used for this comparison is Francis Oakley, The Conciliarist Tradition.
- Brian Tierney, Foundations of the Conciliar Theory
Brian Tierney: This study is most useful when read alongside sources from the parties directly involved and with attention to the author’s chronological and geographical scope. For Avignon Papacy, the bibliographical entry used for this comparison is Brian Tierney, Foundations of the Conciliar Theory.
- Walter Ullmann, The Origins of the Great Schism
Walter Ullmann: Consult this title for the wider period and for disagreements over causation, terminology and reception connected with the dossier. For Avignon Papacy, the bibliographical entry used for this comparison is Walter Ullmann, The Origins of the Great Schism.
- Joseph Gill, The Council of Florence
Joseph Gill: Use this study for reconstruction of chronology, institutions and the modern scholarly debate; compare its conclusions with the primary texts listed above. For Avignon Papacy, the bibliographical entry used for this comparison is Joseph Gill, The Council of Florence.
Relationship to the Catholic Lexicon
This period page establishes sequence, agency, geography and reception. The Catholic Lexicon defines terms such as doctrine, office, sacrament, heresy, schism, jurisdiction and liturgy. Links from each dossier open the corresponding conceptual layer; they do not create a second historical article under another name.