At the end of this time Barre appeared and announced to his parishioners that they might go back to Chinon without him, for he had made up his mind to remain for the present at Loudun, in order to aid the venerable director of the Ursuline convent in the holy work he had undertaken; he enjoined on them to pray morning and evening, with all possible fervour, that, in spite of the serious dangers by which it was surrounded, the good cause might finally triumph. This advice, unaccompanied as it was by any explanation, redoubled the curiosity of the people, and the belief gained ground that it was not merely one or two nuns who were possessed of devils, but the whole sisterhood. It was not very long before the name of the magician who had worked this wonder began to be mentioned quite openly: Satan, it was said, had drawn Urbain Grandier into his power, through his pride. Urbain had entered into a pact with the Evil Spirit by which he had sold him his soul in return for being made the most learned man on earth. Now, as Urbain's knowledge was much greater than that of the inhabitants of Loudun, this story gained general credence in the town, although here and there was to be found a man sufficiently enlightened to shrug his shoulders at these absurdities, and to laugh at the mummeries, of which as yet he saw only the ridiculous side, For the next ten or twelve days Mignon and Barre spent the greater part of their time at the convent; sometimes remaining there for six hours at a stretch, sometimes the entire day. At length, on Monday, the 11th of October, 1632, they wrote to the priest of Venier, to Messire Guillaume Cerisay de la Gueriniere, bailiff of the Loudenois, and to Messire Louis Chauvet, civil lieutenant, begging them to visit the Ursuline convent, in order to examine two nuns who were possessed by evil spirits, and to verify the strange and almost incredible manifestations of this possession. Being thus formally appealed to, the two magistrates could not avoid compliance with the request. It must be confessed that they were not free from curiosity, and felt far from sorry at being able to get to the bottom of the mystery of which for some time the whole town was talking. They repaired, therefore, to the convent, intending to make a thorough investigation as to the reality of the possession and as to the efficacy of the exorcisms employed. Should they judge that the nuns were really possessed, and that those who tried to deliver them were in earnest, they would authorise the continuation of the efforts at exorcism; but if they were not satisfied on these two points, they would soon put an end to the whole thing as a comedy. When they reached the door, Mignon, wearing alb and stole, came to meet them. He told them that the feelings of the nuns had for more than two weeks been harrowed by the apparition of spectres and other blood-curdling visions, that the mother superior and two nuns had evidently been possessed by evil spirits for over a week; that owing to the efforts of Barre and same Carmelite friars who were good enough to assist him against their common enemies, the devils had been temporarily driven out, but on the previous Sunday night, the 10th of October, the mother superior, Jeanne de Belfield, whose conventual name was Jeanne des Anges, and a lay sister called Jeanne Dumagnoux, had again been entered into by the same spirits. It had, however, been discovered by means of exorcisms that a new compact, of which the symbol and token was a bunch of roses, had been concluded, the symbol and token of the first having been three black thorns. He added that during the time of the first possession the demons had refused to give their names, but by the power of his exorcisms this reluctance had been overcome, the spirit which had resumed possession of the mother superior having at length revealed that its name was Ashtaroth, one of the greatest enemies of God, while the devil which had entered into the lay sister was of a lower order, and was called Sabulon. Unfortunately, continued Mignon, just now the two afflicted nuns were resting, and he requested the bailiff and the civil lieutenant to put off their inspection till a little later. The two magistrates were just about to go away, when a nun appeared, saying that the devils were again doing their worst with the two into whom they had entered.
Consequently, they accompanied Mignon and the priest from Venier to an upper room, in which were seven narrow beds, of which two only were occupied, one by the mother superior and the other by the lay sister. The superior, who was the more thoroughly possessed of the two, was surrounded by the Carmelite monks, the sisters belonging to the convent, Mathurin Rousseau, priest and canon of Sainte-Croix, and Mannouri, a surgeon from the town.