Albert de Rochas d'Aiglun was a leading French historian, and well respected researcher, who was made a Chevalier (Knight) in the Legion d'Honneur in 1875 and an officer in 1889.
Rochas is now best known for his extensive parapsychological research and in this video we provide his case history of Françoise Fontaine, who appeared to be being pursued by an 'evil spirit' wishing to possess her.
So uncontrollable were its attacks she had asked for help, and the case history is an account of her exorcism by the priests of Louvier church.
More than 1,000 to 1,200 people, both Catholic and Huguenot were witnesses.
Despite using holy water, confession, prayers, Mass, and candles they almost lost Francoise three times as she shot up in a trance.
"And it needed the help of five to six people, to grasp her ", and hold her down.
She almost lost her battle, at one point she was even turned upside down.
For more of the exciting account see the video.