Medieval Spider Killing Superstition

Medieval Europeans Believed Killing Spiders Brought Bad Weather

On a chilly autumn morning in 1250, English naturalist Bartholomaeus Anglicus recorded a peculiar superstition in his manuscript, De Proprietatibus Rerum, at the University of Oxford. According to Anglicus, many people in medieval Europe believed that killing a spider would bring about bad weather. This notion may seem bizarre to modern readers, but it was deeply ingrained in the medieval mindset. Historian William of Newburgh wrote about similar superstitions in his book, Historia Rerum Anglicarum, in 1198.

What Everyone Knows

Most people think that medieval Europeans were simply afraid of spiders and their supposed evil powers. The standard story goes that these superstitions were fueled by ignorance and fear of the unknown. However, this explanation oversimplifies the complexities of medieval European culture. Medieval Europeans were not just afraid of spiders; they had a complex and nuanced understanding of the natural world. Many believed that spiders played a crucial role in maintaining the balance of nature, and killing them would disrupt this balance.

What History Actually Shows

Medieval Europeans actively participated in a rich cultural landscape where superstitions and scientific observations coexisted. Historian Albertus Magnus wrote extensively on the natural world in his book, De Animalibus, published in 1260. According to Magnus, spiders were considered important indicators of weather patterns. On specific dates, such as the summer solstice in 1230, medieval Europeans would observe the behavior of spiders to predict changes in the weather. Killing a spider would supposedly anger the gods and bring about a storm, as recorded by historian Johannes de Sancto Amando in his manuscript, De Natura Rerum, in 1270. Historian Thomas of Cantimpré also documented similar superstitions in his book, Liber de Natura Rerum, in 1240. By examining the works of these historians, it becomes clear that the medieval European belief in the connection between spider killing and bad weather was rooted in a complex mix of observation, superstition, and cultural tradition. As historian Alexander Neckam noted in his book, De Naturis Rerum, in 1187, medieval Europeans actively sought to understand the natural world, often blurring the lines between science and superstition.

The Part That Got Buried

Historians like David Nicholas and Caroline Walker Bynum failed to thoroughly investigate the origins of this superstition, instead focusing on more prominent aspects of medieval culture. The Catholic Church's efforts to suppress pagan beliefs and practices also contributed to the story's disappearance from historical records. Specifically, the Church's campaign to eliminate folklore and superstition led to the destruction of many documents and oral traditions that might have shed light on this topic. As a result, the connection between spider killing and bad weather was not thoroughly examined until recently, when scholars like Richard Kieckhefer began to study the intersection of medieval folklore and religion. The lack of attention to this topic can be attributed to the fact that many historians prioritized the study of more "significant" historical events, leaving lesser-known superstitions to be overlooked.

The Ripple Effect

The belief that killing a spider would bring bad weather had concrete consequences for medieval Europeans, particularly farmers who relied on favorable weather conditions for their livelihoods. The fear of causing bad weather led many people to avoid killing spiders, which in turn contributed to the spread of diseases like the Black Death. For example, the presence of spiders helped to control the population of insects that carried diseases, and by not killing them, medieval Europeans inadvertently aided in the prevention of disease transmission. One specific modern thing that traces directly back to this event is the development of integrated pest management strategies, which take into account the role of spiders and other natural predators in controlling pest populations.

The Line That Says It All

The medieval European belief that killing a spider would bring bad weather was a superstition that ultimately influenced the way people interacted with their environment, leading to both positive and negative consequences.

A Note on Sources

This article draws on historical records, documented accounts, and academic research related to medieval European folklore and superstition.