The Abbé Faillon relates the conception of this design as occurring to the devout M. de la Dauversière when present at mass with his wife and children on February 2, the feast of the Purification, 1635 or 1636, when, after having received holy communion, he became convinced that it was his duty to establish an order of lady Hospitalières, to take St. Joseph as their patron; to establish in Montreal a Hôtel-Dieu to be directed by these nuns; that the Holy Family should be particularly honoured in this island; that the effect of this inspiration was a revelation to him, as he had never conceived the project before, even remotely; and, moreover, his knowledge of Montreal had hitherto been as vague as that of Canada. But Dollier de Casson, who was afterwards the parish priest of Montreal, an old-time soldier, a learned and pious, but practical man, although a great believer in Providence, gives a less mystical account in his history of Montreal written from 1672 to 1673. There he relates the origin of the design of the establishment of Montreal as due to the reading of one of the "Jesuit Relations," which had fallen into de la Dauversière's hands. There the writer spoke strongly of the Island of Montreal as being the most suitable place in the country for the purpose of establishing a mission and receiving the savages. In reading this, M. de la Dauversière was at once much touched. He became enthusiastic and already saw the vision of a French colony settled at Montreal christianizing the natives. Montreal seems to have so obsessed his mind that he was never tired of speaking of it, depicting its position, the geography of its location, its beauty, its fertility, its size, with such minuteness and vividness, that all who heard him felt that he had been directly inspired with this knowledge, for little was known of Montreal owing to the wars which had left so little opportunity for exploring it well, that it was with difficulty that even a rough idea of it could be furnished. De la Dauversière saw himself called to give himself up to the conversion of the savages; but still doubtful as to whether this idea was from God or not, he betook himself to his Jesuit friend and confessor, Father Chauveau, rector of the college at La Flèche. "Have no doubt, Monsieur," was the reply. "Engage in it in good earnest." There was then at La Flèche under the roof of M. de la Dauversière, a gentleman of ample means who had come to live with him "as in a school of piety so as to learn to serve our Lord better," This was M. Pierre Chevrier, Baron de Fancamp, who afterwards forsook the world and joined the new order of secular priests under the name of the "Seminary of St. Sulpice."