1676: Marie-Madeleine-Marguerite d’Aubray, Marquise de Brinvilliers

ExecutedToday.com ^ | July 16,2010 | Headsman

[CheshireTheCat]

Brinvilliers, Marie Marguerite, Marquise de (English Wikipedia entry | French) who obtained infamy as a poisoner in the time of Louis XIV, was a daughter of the Dreux d’Aubrai, a lieutenant civil, or judge having a certain limited jurisdiction, at whose hands she received a careful education.

In 1651, whilst still very young, she became the wife of the Marquis de Brinvilliers, with whom she resided at her father’s house, in Paris. Her husband, who was the colonel of the Regiment de Normandie, entertained at his house a young officer of cavalry of the Regiment de Tracy, named Gaudin de Sainte-Croix, a native of Montauban, and the illegitimate member of an illustrious family. He was unprincipled enough to encourage the unlawful passion which the marchioness conceived for him; and her father, in consequence, procured in 1663 a lettre de cachet against Sainte-Croix, who underwent a year’s incarceration in the Bastille.

During his confinement he learned from a fellow-prisoner, an Italian named Exili, the art of preparing subtle poisons; a secret which, upon his enlargement, he communicated to his mistress, who determined to poison her father and the other members of her family. Having first wantonly essayed her art upon the patients of the Hotel-Dieu, she proceeded, with the aid of a servant named Jean Amelin, or La Chaussee, to take the lives of her father, her two brothers, and her sister.

This feat she accomplished gradually between the years 1666 and 1670. More than once she poisoned her husband; but Sainte-Croix, whose prudence shrank from the obligation of marrying the terrible widow, each time preserved the life of the Marquis by the administration of an antidote...

[Chicory]

How amazing! I read John Dickson Carr’s A Burning Court last week; this case of the Marquise figures prominently in the book!