The Black Death

Persecution of Jewish Communities During the Black Death

The Black Death triggered one of the worst episodes of antisemitic violence in medieval European history. Across the Holy Roman Empire, parts of France, and the Iberian Peninsula, Jewish communities were accused of poisoning wells to spread the plague. Hundreds of communities were destroyed, and thousands of Jews were burned alive in mass executions. The massacres of 1348–1349 decimated the Jewish population of Central Europe and drove survivors eastward, reshaping the demographic and cultural geography of European Jewry for centuries.

The Accusation of Well-Poisoning

The accusation that Jews were poisoning wells to spread the plague first emerged in the spring of 1348 in the Dauphiné and Savoy, in the Alpine regions between France and Italy. Jews were arrested, tortured, and forced to confess to a conspiracy to poison the water supplies of Christendom. The confessions, extracted under duress, described an international network of Jewish leaders who had distributed poison to communities across Europe.

These confessions were circulated widely, carried by letters between towns and cities, and provided the template for similar accusations across the Rhineland, Switzerland, and the German-speaking lands. The pattern was consistent: Jews were arrested, tortured until they confessed, and then burned alive on the basis of their confessions. The authorities who conducted the trials — municipal councils, ecclesiastical courts, and secular lords — varied in their willingness to accept the accusations, but in many places, popular pressure made resistance difficult.

The Massacres in the Rhineland

The Rhineland, home to some of the oldest and most distinguished Jewish communities in Europe, was the epicentre of the violence. In Strasbourg, the entire Jewish community — approximately 2,000 people — was burned alive on 14 February 1349, on a wooden platform erected in the Jewish cemetery. The massacre took place before the plague had even reached the city, demonstrating that the violence was driven by antisemitic sentiment rather than by the immediate experience of the disease.

In Basel, the Jewish community was destroyed in January 1349. The Jews were locked in a wooden building on an island in the Rhine and burned alive. The city council, which had initially attempted to protect the Jewish community, capitulated to popular pressure and authorised the massacre.

In Mainz, the Jewish community — one of the largest in Europe, with perhaps 3,000 to 6,000 members — was attacked in August 1349. Many Jews chose to burn their own houses and die together rather than face the mob. The practice of Kiddush ha-Shem (sanctification of God’s name) — the choice of death over forced conversion — was a well-established tradition in medieval Ashkenazi Jewry, and it was invoked again during the Black Death massacres.

Similar massacres occurred in Cologne, Worms, Speyer, Trier, and dozens of smaller communities across the Rhineland, Swabia, and Franconia. The total number of Jewish communities destroyed in 1348–1349 has been estimated at between 200 and 300, and the total number of Jews killed at several thousand.

The Role of Economic Resentment

The accusation of well-poisoning was not the only motive for the massacres. Economic resentment played a significant role. Many Jews in medieval Europe were engaged in moneylending — one of the few occupations open to them, as they were excluded from the guilds and from landownership. The debts owed to Jewish moneylenders by Christian borrowers created a reservoir of resentment that could be mobilised when the opportunity arose.

The destruction of Jewish communities during the Black Death was, in many cases, accompanied by the confiscation of Jewish property and the cancellation of debts owed to Jewish lenders. The massacres served the financial interests of the debtors, who could eliminate their obligations by eliminating their creditors. This economic dimension does not explain the massacres entirely — the violence was driven by a complex mixture of theological prejudice, fear, and the search for scapegoats — but it was a significant factor.

Papal Condemnation

Pope Clement VI issued two papal bulls condemning the persecution of Jews during the Black Death, both in 1348. The first, of 5 July 1348, declared that the accusation of well-poisoning was false, noting that Jews were dying of plague alongside Christians and that the disease struck in regions where no Jews lived. The second, Quamvis perfidiam (26 September 1348), reiterated the condemnation and threatened excommunication for those who persecuted Jews.

Clement’s intervention was courageous and principled, but its effectiveness was limited. The papal bulls saved some Jewish communities, particularly in the papal territories around Avignon and in parts of Italy where papal authority was strong. In the Rhineland, where the massacres were most severe, the bulls were either ignored or arrived too late to prevent the violence.

The limitation of papal authority in this context illustrates the fragmented nature of political power in the Holy Roman Empire. The emperor, Charles IV, was theoretically responsible for the protection of Jews (who were considered servi camerae regis, servants of the royal chamber), but his ability to enforce protection was limited by the autonomy of the cities and princes who actually controlled the territories where Jews lived.

The Impact on European Jewry

The massacres of 1348–1349 devastated the Jewish communities of Central Europe. The ancient communities of the Rhineland — Mainz, Worms, Speyer, Cologne — which had been centres of Jewish learning and culture for centuries, were destroyed or severely diminished. The survivors fled eastward, to Poland, Lithuania, and the territories of the Golden Horde, where they established new communities that would become the heartland of Ashkenazi Jewry in the following centuries.

The migration of Jews from Central to Eastern Europe had profound cultural and demographic consequences. The Yiddish language, which had developed in the Rhineland, was carried eastward and became the vernacular of Eastern European Jewry. The centres of Jewish scholarship shifted from the Rhineland to Poland and Lithuania, where new yeshivot (rabbinical academies) were established. The demographic geography of European Jewry was permanently altered.

The Iberian Peninsula

The persecution of Jews during the Black Death was less severe in the Iberian Peninsula than in the Rhineland, though violence did occur. The Jewish communities of the Crown of Aragon — particularly Barcelona and Valencia — were attacked in 1348, and some were destroyed. However, the Iberian Jewish communities were larger, more established, and better integrated into the political and economic life of the kingdoms, and the royal authorities generally sought to protect them.

The more significant threat to Iberian Jewry came later, in the pogroms of 1391, which were not directly caused by the plague but were fuelled by the social and economic tensions that the pandemic had intensified.