When it comes to 14th-century French nobility, there are few characters more illustrious (and more terrifying) than Gilles de Rais. Rais began his life as a darling of the French military, and he even fought alongside Joan of Arc during the Hundred Years' War.
However, later in his life, it was revealed that Rais was always up to no good.
Right before his death, it was discovered that Rais was a prolific child murderer.
After a conflict with a member of the clergy, the church began investigating Rais. What they found were numerous complaints of children near his castle disappearing. Further investigation found a grave near his property containing the naked remains of at least 47 children. At his trial, it was revealed that Rais lured the children in with the promise of a meal. After dinner, he then sexually abused and murdered them. In 1440, he was convicted for his heinous crimes and sentenced to death by hang