The fact was, that when Richelieu had been Prior of Coussay he and Grandier had had a quarrel on a question of etiquette, the latter as priest of Loudun having claimed precedence over the prior, and carried his point.

The cardinal had noted the affront in his bloodstained tablets, and at the first hint de Laubardemont found him as eager to bring about Grandier's ruin as was the councillor himself.
De Laubardemont was at once granted the following commission: "Sieur de Laubardemont, Councillor of State and Privy Councillor, will betake himself to Loudun, and to whatever other places may be necessary, to institute proceedings against Grandier on all the charges formerly preferred against him, and on other facts which have since come to light, touching the possession by evil spirits of the Ursuline nuns of Loudun, and of other persons, who are said like wise to be tormented of devils through the evil practices of the said Grandier; he will diligently investigate everything from the beginning that has any bearing either on the said possession or on the exorcisms, and will forward to us his report thereon, and the reports and other documents sent in by former commissioners and delegates, and will be present at all future exorcisms, and take proper steps to obtain evidence of the said facts, that they may be clearly established; and, above all, will direct, institute, and carry through the said proceedings against Grandier and all others who have been involved with him in the said case, until definitive sentence be passed; and in spite of any appeal or countercharge this cause will not be delayed (but without prejudice to the right of appeal in other causes), on account of the nature of the crimes, and no regard will be paid to any request for postponement made by the said Grandier.

His majesty commands all governors, provincial lieutenant-generals, bailiffs, seneschals, and other municipal authorities, and all subjects whom it may concern, to give every assistance in arresting and imprisoning all persons whom it may be necessary to put under constraint, if they shall be required so to do." Furnished with this order, which was equivalent to a condemnation, de Laubardemont arrived at Laudun, the 5th of December, 1633, at nine o'clock in the evening; and to avoid being seen he alighted in a suburb at the house of one maitre Paul Aubin, king's usher, and son-in-law of Memin de Silly.

His arrival was kept so secret that neither Grandier nor his friends knew of it, but Memin, Herve Menuau, and Mignon were notified, and immediately called on him.

De Laubardemont received them, commission in hand, but broad as it was, it did not seem to them sufficient, for it contained no order for Grandier's arrest, and Grandier might fly.