08/20/2026
☠️ A MONK. A TOAD. A CUP OF ALE. AND A DEAD KING.
It sounds like the perfect medieval murder.
The only problem? Almost none of those details appears in the evidence closest to King John’s death.
By October 1216, John’s kingdom was collapsing around him. The previous year, rebellious barons had forced him to accept Magna Carta at Runnymede. After the agreement failed, England descended into civil war, and the rebels invited Prince Louis of France to claim the English throne.
John spent his final months campaigning desperately across the country.
During his journey through eastern England, part of his baggage train was reportedly swallowed by the dangerous tides and mud of the Wash. Later tradition claimed the lost cargo included the Crown Jewels, although the true extent of the disaster remains uncertain.
Then the king became seriously ill.
Medieval accounts describe John suffering from dysentery—then commonly called “the flux.” The disease was a constant danger to armies living in crowded, unsanitary conditions and consuming contaminated food or water.
John stopped at Swineshead Abbey in Lincolnshire before continuing to Newark Castle. His condition deteriorated, and he died during the night of October 18–19, 1216.
He was forty-nine years old.
But dysentery was not dramatic enough for the death of one of England’s most hated kings.
By the end of the thirteenth century, a different story had entered the written tradition. According to this later legend, John threatened to make bread so expensive that ordinary people would starve.
A lay brother at Swineshead supposedly decided that killing the king was the only way to prevent the suffering.
As the story evolved, the monk was given a name—often Simon—and the murder became increasingly theatrical. One version claimed that he extracted poison from a toad and mixed it into a cup of ale or cider.
To convince John that the drink was safe, the monk allegedly tasted it first. Both the monk and the king then died.
It is an unforgettable story—but it is not reliable evidence.
The poisoning accusation does not appear in accounts written closest to John’s death. Its most colorful details were added and reshaped by later chroniclers, printers and dramatists.
The meaning of the story also changed with the politics of the storyteller.
In some medieval versions, the monk becomes a heroic figure who sacrifices himself to save England from a tyrant. During the Protestant Reformation, writers such as John Foxe transformed the same incident into an attack on corrupt Catholic monks. John could now be portrayed as a victim betrayed by a murderous religious order.
One suspicious death had become two entirely different propaganda stories.
The better-supported explanation remains dysentery. John had been campaigning through difficult conditions, his illness developed over time, and writers closer to the event described disease rather than an assassination.
There is no physical evidence that he was poisoned, no dependable eyewitness account of a murderous monk and no proof that a toad ever entered the story anywhere outside someone’s imagination.
Nevertheless, the legend reveals something important: people often give controversial rulers the deaths they believe those rulers deserve.
King John may have died from an intestinal infection—but history handed “Bad King John” a poisoned cup.
Do you believe the monk’s legend—or was dysentery the real killer?
Comment “POISON” or “DYSENTERY,” save this post, and follow Stories with Pauline for the history hiding behind the legend. 👑
