Marie Delphine Macarty, more commonly known as Madame Blanque, until her third marriage, when she became known as Madame LaLaurie, was a New Orleans Creole socialite and serial killer, noted for torturing and murdering slaves in her household.
Married three times in Louisiana, and was twice widowed. She maintained her position in New Orleans society until rescuers responded to a fire at her mansion. They discovered bound slaves in her attic who showed evidence of cruel, violent abuse over a long period. Lalaurie’s house was subsequently sacked by an outraged mob of New Orleans citizens. She escaped to France with her family.