Madame de Brinvilliers
July 22, 1630 — Paris, France
Marie-Madeleine d'Aubray, Marquise de Brinvilliers, was a French aristocrat who in the early 1670s was tried and convicted of poisoning her father and two brothers for their inheritances, becoming the central figure in one of the most sensational criminal cases of seventeenth-century France and sparking the broader poisoning hysteria known as the Affair of the Poisons that would eventually ensnare figures close to Louis XIV himself.
Origins of a Scandal
Born on July 22, 1630 in Paris, Marie-Madeleine d'Aubray was the daughter of a senior magistrate and grew up in comfort and privilege. She married Antoine Gobelin, the Marquis de Brinvilliers, in 1651. The marriage was unhappy; she took a lover, Gaudin de Sainte-Croix, a soldier who introduced her to a circle that included the Italian poisoner Exili, then imprisoned in the Bastille. Whether she learned the art of poisoning from Sainte-Croix or simply found in him a willing accomplice for plans already conceived is a matter of historical debate. What is clear is that between 1666 and 1670, her father and her two brothers died of what physicians at the time attributed to natural causes but which later evidence demonstrated was slow arsenic poisoning administered by the Marquise or under her direction.
Discovery and Trial
When Sainte-Croix died suddenly in 1672, a casket of papers and substances was found among his effects, including incriminating letters from the Marquise. She fled France and lived in exile for three years — in England, then the Spanish Netherlands — before being captured in a convent in Liège in 1676. Returned to Paris, she was subjected to the question (judicial torture) in which she confessed to the murders and alleged that she had also tested her poisons on patients in the Hôtel-Dieu hospital, the primary charitable hospital of Paris, under the guise of bringing them food. She was tried by the Paris Parlement, convicted, and sentenced to death. She was publicly beheaded on the Place de Grève on July 17, 1676, and her body burned. The spectacle drew enormous crowds; contemporary observers including Madame de Sévigné, one of the great letter-writers of French literature, described it in vivid detail.
Did You Know?
Madame de Brinvilliers confessed during interrogation that she had tested her poisons on the poor patients at the Hôtel-Dieu hospital in Paris, visiting the wards in the guise of a charitable noblewoman bringing food and medicines. Whether this confession was induced by torture or represented the truth is still debated by historians, but it was believed at the time and contributed to the image of her as a monster without conscience. The accusation also carried a specific horror: she had used charity as a cover for murder, targeting the most vulnerable people in the city.
The Affair of the Poisons
The Brinvilliers case was the prelude to an even larger scandal. In 1679, French authorities began investigating a network of fortune-tellers, abortionists, and poison suppliers operating in Paris, and discovered that the use of poison was far more widespread in aristocratic circles than anyone had imagined. The investigation, known as the Affair of the Poisons, eventually produced accusations against more than 400 people, including figures close to Louis XIV's court — most sensationally his own mistress, Madame de Montespan. The king suppressed the full findings. The Brinvilliers case served as the initial shock that convinced the court and public that poison was being used routinely by French aristocrats to dispose of inconvenient relatives and rivals, and the fear it generated was the atmosphere within which the later scandal became possible. Her name became, in seventeenth-century French, a byword for cold-blooded calculation in murder.