But if you want to read an in-credible Catholic account of a women who was looked to as a very devout and extraordinary saint (being pregnant while still a virgin, and fasting for years, among other things), and was very well-known throughout Christendom in the 16th and 17th centuries, yet they say was possessed, see here: http://www.mysticsofthechurch.com/2011/12/sister-magdalena-of-cross-nun-who-made.html
There’s one born every minute.
The naivety of someone who would actually believe this nonsense is staggering.
She was branded a false prophet and not a Saint by the Church. Her story is a that of repentant in the end and shows even the worst of sinners are forgiven
From New Advent...Impostors
http://www.newadvent.org/cathen/07698b.htm
Falling dangerously ill in 1543, Magdalena confessed to a long career of hypocrisy, ascribing most of the marvels to the action of demons by which she was possessed, but maintaining their reality. She was sentenced by the Inquisition, in an auto-da-fé at Cordova, in 1546, to perpetual imprisonment in a convent of her order, and there she is believed to have ended her days most piously amid marks of the sincerest repentance