Black Death and the Church: How the Plague Shattered Medieval Faith

Written by Simon Williams

The Black Death killed up to half of Europe's clergy between 1347 and 1353, triggered a crisis of clerical succession, and unleashed the flagellant movement. Its assault on the Church's institutional authority drove the theological disillusionment that helped produce the Reformation.

• Outbreak period: 1347 to 1353 (initial wave in England and Western Europe)
• Estimated clerical mortality: 40 to 50 per cent across Europe; over 50 per cent in some English dioceses
• Archbishops of Canterbury: Three affected within fourteen months (John de Stratford, John de Ufford, Thomas Bradwardine), 1348 to 1349
• Flagellant movement: Active across Germany and the Low Countries, 1348 to 1349; condemned by Pope Clement VI in October 1349
• Strasbourg massacre: 14 February 1349; approximately two thousand Jewish people burned alive in the city cemetery
• Papal response: Clement VI defended Jewish communities July and September 1348; condemned flagellants October 1349
• Long-term consequence: Contributed to the Lollard movement (1370s) and the conditions that produced the English Reformation

When the Black Death reached England in the summer of 1348, one of the first institutions to feel its weight was the one that medieval people turned to in every crisis. The Church was not merely a religious body in the fourteenth century. It was the administrative backbone of society, the keeper of records, the provider of hospitals, the educator of the literate, and the psychological anchor of a world without other explanations for suffering. When the plague began killing priests alongside everyone else, it did not just create a staffing problem. It struck at the very architecture of meaning.

I find myself returning to a single, extraordinary sequence of events whenever I think about the plague and the Church. In the spring of 1348, John de Stratford, the Archbishop of Canterbury, died. His successor, John de Ufford, was appointed but caught the plague before he could be consecrated and died in May 1348. Thomas Bradwardine, one of the finest theological minds in England, was finally appointed in June 1349. He returned to England from Avignon, where the papal court was based, and died of plague on 26 August 1349, just forty days after his arrival. Three Archbishops of Canterbury in little more than a year. That is not an administrative inconvenience. That is an institution in freefall.

The Scale of Clerical Losses

The medieval parish priest was the most intimate point of contact between the Church and ordinary people, and the parish priest was dying everywhere. Historians estimate that between 40 and 50 per cent of European clergy perished during the initial outbreak of 1347 to 1353. In some English dioceses the figure was higher. The Bishop of Bath and Wells recorded mortality rates of over 50 per cent among his clergy. In some rural deaneries, virtually every priest was dead by the end of 1349.

This was catastrophic in ways that went beyond simple numbers. The dying required last rites. The dead required burial with proper rites. The living required the sacraments, confession, and communion, which could only be administered by ordained priests. As the clergy died, the spiritual infrastructure of medieval life began to collapse. Bishop Ralph of Shrewsbury issued a remarkable emergency decree in January 1349 permitting lay people, and even women, to hear the confessions of the dying if no priest could be found. That a bishop was driven to this measure tells you everything about the scale of the catastrophe.

The Crisis of Clerical Succession

The problem went beyond the parish level. Bishops died. Cathedral canons died. Monks and friars died. The monastic houses, which provided a substantial proportion of educated administrators, scribes, and advisors to both Church and Crown, were devastated. Meaux Abbey in Yorkshire lost its abbot and all but ten of its monks. The house at Halesowen in Worcestershire lost the abbot and all of its senior brethren.

What followed was a recruitment crisis that had long-term consequences the Church never fully managed. To fill the desperate shortage of clergy, bishops ordained men at an accelerated rate, often with far less training and scrutiny than normal. Ordinations that would ordinarily take years were completed in months. The effect, as contemporaries noticed and complained about, was a clergy of dramatically uneven quality. Men who in ordinary times would never have been considered for holy orders were now wearing vestments and dispensing sacraments. The structural integrity of the Church, its claim to a trained and authoritative priesthood, was quietly compromised.

If you want to understand how communities navigated the labour upheaval that followed the plague, The Labour Machine traces the economic and social transformation that began in the immediate aftermath of the Black Death, including the Church's diminished role as a labour and administrative authority.

The Flagellant Movement

Not everyone responded to the plague with prayer and patient waiting. Across Germany, the Low Countries, and into France, a movement emerged that offered a different answer to the theological question the plague posed: if God was punishing humanity, then humanity needed to take direct responsibility for its own penance.

The flagellants processed through towns in organised groups of several hundred, wearing white robes marked with red crosses, chanting, and flogging themselves with leather straps tipped with metal spikes. The ritual was highly structured. Participants were required to commit to a programme of thirty-three and a half days of flagellation, one day for each year of Christ's life. They were forbidden to wash, change their clothes, sleep in beds, or speak to women. The blood and suffering were the point. If the plague was divine punishment, then public, visible, collective self-punishment might divert God's anger.

The movement alarmed Church authorities almost immediately. Pope Clement VI, operating from the papal court at Avignon where he had strategically surrounded himself with physicians and kept large fires burning that he believed would purify the air, issued a papal bull in October 1349 condemning the flagellant movement. His objections were theological rather than simply practical: the flagellants were conducting religious rites without clerical authorisation, implying that salvation could be achieved by the laity without priestly intermediaries. This was a direct challenge to the Church's monopoly on sacramental grace. The bull ordered secular authorities to suppress the movement by force if necessary.

"Let no one dare to join their assemblies, nor to sustain or favour them in any way whatsoever." (Pope Clement VI, papal bull against the flagellants, October 1349)

The suppression was reasonably effective in France and England, but the movement pointed toward something the Church could not simply ban away: a growing sense among lay people that the institutional Church had failed to protect them, and that direct, unmediated approaches to God might be necessary.

The Scapegoating of Jewish Communities

The search for a human cause for the catastrophe found a familiar target. Across Central Europe, rumours spread that Jews had caused the plague by poisoning wells. The accusations were circulated through confessions extracted under torture and spread rapidly through a population desperate for an explanation that placed the source of their suffering in human hands rather than divine will.

The massacres that followed were among the worst episodes of antisemitic violence in European history before the twentieth century. In Strasbourg on 14 February 1349, around two thousand Jewish people were burned alive in the city cemetery, their property confiscated by the city authorities. In Mainz, Frankfurt, and Basel, communities were destroyed through a combination of massacre and forced mass suicide. In some towns, Jewish inhabitants were burned in their own synagogues.

Pope Clement VI intervened twice, issuing pronouncements in July 1348 and again in September 1348 that explicitly condemned the accusations, noting that Jews were dying of the plague at the same rate as Christians, which disproved the poisoning theory on its face, and ordering that they should not be harmed. The orders were largely ignored. The will of the papacy, already weakened by decades of residence at Avignon rather than Rome, could not override the terror and rage of local populations.

The persecution of Jewish communities during the Black Death did not emerge from nowhere. Across England and much of Europe, Jewish communities had spent two centuries in a legal position of profound vulnerability: formally designated as servi camerae regis, servants of the royal chamber, dependent on royal protection that history had shown could be suspended or removed entirely whenever it suited the Crown. The Black Death simply gave local populations a reason to act on hatreds the legal framework had long enabled. If you want to understand the legal architecture that made this possible, the Medieval Law and Jewish History Study Guide traces how that designation worked in England from 1066 to the Edict of Expulsion in 1290, and why the Crown's claim to be protecting Jewish communities was always, from the beginning, more complicated than it appeared.

The Long-Term Crisis of Faith

The plague raised theological questions that the medieval Church was not equipped to answer satisfactorily. If God was all-powerful and all-good, why had the innocent, including children and devout priests, died alongside the sinful? The standard answers, that suffering was a test or a punishment, strained credibility when half the population of a city died in a single summer.

The Church's institutional response, accelerated ordinations, emergency lay confessions, hastily written pastoral letters, only deepened the sense that the institution was improvising in the face of forces it did not understand. The moral authority the Church derived from its claim to stand between humanity and God was visibly shaken.

The long-term consequences are traceable. John Wycliffe, who began his theological challenge to the Church's authority in the 1370s, was drawing on a generation of disillusionment that the plague had accelerated. His followers, the Lollards, specifically attacked the doctrine that priestly mediation was necessary for salvation, precisely the doctrine the flagellants had challenged in their own way thirty years earlier. The Lollard movement would eventually feed into the conditions that made the English Reformation possible in the sixteenth century. It is not too much to say that the theological shockwave of the Black Death was still travelling when Henry VIII dissolved the monasteries in the 1530s.

This article is part of the Black Death series. Explore all articles at https://historiesandcastles.com/blogs/the-black-death.

Deepen Your Understanding

→ The Black Death in Medieval England: The broader context of how the plague devastated English society, economy, and institutions during the initial outbreak.

→ Origins of the Black Death: How the plague travelled from Central Asia to England, tracing the routes that brought it to English shores.

→ Black Death and the Peasants' Revolt: The social and economic pressures the plague created, and how they erupted in 1381.

→ 5 Surprising Truths About the Black Death: Counter-intuitive findings from modern research, including the true origins of the pandemic and the delayed wage revolution.

→ The Black Death as Catalyst: The sweeping social and economic transformation the plague set in motion across medieval Europe.

People Also Ask

Did the Black Death destroy the medieval Church?

The Black Death did not destroy the medieval Church, but it inflicted wounds from which the institution never fully recovered. The death of up to half the European clergy created a crisis of clerical succession and quality that persisted for decades. The Church's inability to explain or prevent the catastrophe eroded its moral authority and fed the anti-clerical sentiment that would eventually fuel the Lollard movement in England and, over the longer term, the conditions for the Protestant Reformation. The Church survived, but it survived diminished, improvised, and increasingly questioned.

Why were Jewish communities persecuted during the Black Death?

Jewish communities were persecuted because of rumours, spread through confessions extracted under torture, that they had caused the plague by poisoning wells. These accusations gave terrified populations a human explanation for an incomprehensible catastrophe. Pope Clement VI issued pronouncements explicitly denying the accusations and noting that Jews were dying of plague at the same rate as Christians, but the pronouncements were widely ignored. The resulting massacres, most notably in Strasbourg in February 1349, destroyed communities across Central Europe and represent some of the worst episodes of antisemitic violence in pre-modern European history.

What were the flagellants and why did the Church oppose them?

The flagellants were a movement that emerged in Germany and spread through Central Europe during 1348 and 1349. Members processed through towns in white robes, publicly flogging themselves as a form of collective penance intended to divert God's anger. The Church opposed them for theological rather than merely practical reasons: the flagellants were performing religious rituals without clerical authorisation, implying that the laity could achieve salvation through direct self-punishment rather than through priestly sacraments. Pope Clement VI condemned the movement in a papal bull in October 1349, ordering secular authorities to suppress it, which they largely did.

How did the Black Death affect the number of priests?

The Black Death killed an estimated 40 to 50 per cent of European clergy during the initial outbreak. In some English dioceses the figure exceeded 50 per cent. This created an acute shortage that bishops addressed by ordaining men rapidly and with far less training than normal. The result was a parish clergy of markedly uneven quality, which contemporaries noted and complained about. The crisis of clerical succession extended to the highest levels: three Archbishops of Canterbury were affected within little more than a year between 1348 and 1349.

How did Pope Clement VI respond to the Black Death?

Pope Clement VI responded with a mixture of practical measures and institutional authority. At his court in Avignon, he kept large fires burning on medical advice that heat would purify the air, and he surrounded himself with physicians. He issued pronouncements defending Jewish communities against persecution and denouncing the flagellant movement. He also issued indulgences for those who died of plague unable to receive last rites. His authority to enforce his pronouncements outside France was, however, severely limited.

Did the Black Death lead to the Protestant Reformation?

The Black Death did not directly cause the Protestant Reformation, but it created conditions that made it more conceivable. The plague's assault on the Church's institutional integrity, the accelerated ordination of poorly trained clergy, the visible failure of priestly intercession, and the growing sense that the Church could not fulfil its spiritual promises all fed a generation of anti-clerical feeling. John Wycliffe began his theological challenge to Church authority in the 1370s, building on this disillusionment, and the Lollard movement he inspired was a direct predecessor to the English Reformation. The causal chain is long but traceable.

Primary Sources and Further Reading

• Ziegler, Philip (1969): The Black Death, Collins: The foundational English-language account of the pandemic, with substantial coverage of the Church's losses and the flagellant movement. Available via major libraries.
• Tuchman, Barbara W. (1978): A Distant Mirror: The Calamitous 14th Century, Alfred A. Knopf: Authoritative chapters on the plague's effect on religious life and the institutional Church. Available widely.
• Kelly, John (2005): The Great Mortality, HarperCollins: Detailed coverage of Jewish persecution and the flagellant movement during the Black Death.
• Benedictow, Ole J. (2004): The Black Death 1346 to 1353: The Complete History, Boydell Press: The most thorough modern scholarly account, with detailed regional statistics on clerical mortality.
• Nirenberg, David (1996): Communities of Violence, Princeton University Press: Scholarly analysis of anti-Jewish violence during the Black Death, including Clement VI's interventions. Available via Princeton University Press.
• The National Archives: Episcopal registers recording clerical mortality in English dioceses, 1349. Search at discovery.nationalarchives.gov.uk.

Note: Estimates of clerical mortality vary by diocese and region. The figure of 40 to 50 per cent represents a widely cited scholarly consensus for Europe as a whole; some English dioceses recorded significantly higher rates. These figures are drawn from surviving episcopal registers and are considered reliable, though registers were sometimes poorly maintained during the crisis itself. The quotation attributed to Pope Clement VI's bull against the flagellants is a paraphrase reflecting the documented content of the October 1349 proclamation rather than a verbatim translation.

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