Gilles de Montmorency-Laval, better known as Gilles de Rais in reference to his title of Baron de Retz, was a French soldier and nobleman who lived between 1405 and 1440. He famous for committing sexual crimes and serial murders.
Gilles de Rais
Most Evil Deceased Serial Killer
for Most Evil Deceased Serial Killer in Most Evil Deceased Criminals and Individuals in History
Suggested by adrianabengozarlopez
A spin on the previous story, but this time it sorts the most evil individuals to ever have existed