The Black Death

Primary Sources for the Black Death

The primary sources for the Black Death are the contemporary and near-contemporary documents, objects, and physical remains that provide direct evidence of the pandemic. These sources — chronicles, letters, medical treatises, administrative records, artistic evidence, and archaeological remains — form the foundation on which all modern understanding of the Black Death is built.

Chronicles

The chronicles of the Black Death are the most widely read and most frequently cited primary sources. Written by monks, clerics, and civic officials across Europe and the Middle East, these narratives record the plague’s arrival, its progress through specific communities, and its impact on social, economic, and religious life.

The Italian chronicles are among the most detailed. Giovanni Villani of Florence began recording the plague in his Nuova Cronica but died of the disease in 1348. His brother Matteo continued the chronicle. Agnolo di Tura del Grasso of Siena left one of the most harrowing personal accounts. Marchionne di Coppo Stefani provided a detailed description of the plague in Florence.

In France, Jean de Venette described the plague’s impact on Paris and the countryside. In England, Henry Knighton, Robert of Avesbury, and others recorded the pandemic. In the German lands, Fritsche Closener and John of Winterthur described the plague and the persecution of Jews. In the Islamic world, al-Maqrizi, Ibn al-Wardi, and Ibn Khaldun recorded the plague’s impact on the Middle East.

Letters and Personal Accounts

Letters provide some of the most vivid and personal accounts of the Black Death. Petrarch’s letters to his friends describe the devastation of Avignon and the loss of his beloved Laura. The letters of merchants, diplomats, and clerics provide information about the plague’s progress along trade routes and its impact on commercial and political life.

Medical Treatises

The medical treatises of the plague era provide clinical descriptions of the disease and insight into the medical understanding of the period. The report of the Medical Faculty of the University of Paris (1348) is the most famous, attributing the plague to a planetary conjunction. Guy de Chauliac’s account in his Chirurgia Magna is notable for its clinical precision. Ibn al-Khatib’s treatise arguing for the contagiousness of plague is one of the most sophisticated medical analyses of the pandemic.

Administrative Records

Administrative records provide quantitative data on the plague’s impact. Manorial court rolls from England record the deaths of tenants and the transfer of land. Tax assessments from across Europe document the decline in population and economic activity. Wills and testaments provide evidence of mortality and the transfer of property. Burial registers record the volume of deaths in specific parishes and communities.

Artistic and Archaeological Evidence

Artistic evidence — paintings, sculptures, manuscripts, and funerary monuments — provides visual documentation of the plague’s cultural impact. Archaeological evidence — plague cemeteries, mass graves, skeletal remains — provides physical evidence of mortality and has been the source of DNA studies that have confirmed the identity of the pathogen.

Evaluating Primary Sources

Primary sources must be used with critical awareness. Chroniclers’ figures for mortality are often rounded or exaggerated. Medical treatises reflect the theoretical frameworks of their time, which may not correspond to modern understanding. Administrative records are uneven in their coverage. The integration of multiple types of evidence — documentary, artistic, archaeological, and molecular — is essential to producing a reliable understanding of the pandemic.