Before leaving Canada the Bishop of Quebec had entrusted the administration of the apostolic vicariate to M. de Bernieres, and, in case of the latter’s death, to M. Dudouyt.  He embarked in the autumn of 1671.

To the keen regret of the population of Ville-Marie, which owed him so much, M. de Queylus, Abbe de Loc-Dieu and superior of the Seminary of Montreal for the last three years, went to France at the same time as his ecclesiastical superior.  “M. l’abbe de Queylus,” wrote Commissioner Talon to the Minister Colbert, “is making an urgent application for the settlement and increase of the colony of Montreal.  He carries his zeal farther, for he is going to take charge of the Indian children who fall into the hands of the Iroquois, in order to have them educated, the boys in his seminary, and the girls by persons of the same sex, who form at Montreal a sort of congregation to teach young girls the petty handicrafts, in addition to reading and writing.”  M. de Queylus had used his great fortune in all sorts of good works in the colony, but he was not the only Sulpician whose hand was always ready and willing.  Before dying, M. Olier had begged his successors to continue the work at Ville-Marie, “because,” said he, “it is the will of God,” and the priests of St. Sulpice received this injunction as one of the most sacred codicils of the will of their Father.  However onerous the continuation of this plan was for the company, the latter sacrificed to it without hesitation its resources, its efforts and its members with the most complete abnegation.[6] Thus when, on March 9th, 1663, the Company of Montreal believed itself no longer capable of meeting its obligations, and begged St. Sulpice to take them up, the seminary subordinated all considerations of self-interest and human prudence to this view.  To this MM. de Bretonvilliers, de Queylus and du Bois devoted their fortunes, and to this work of the conversion of the savages priests distinguished in birth and riches gave up their whole lives and property.  M. de Belmont discharged the hundred and twenty thousand francs of debts of the Company of Montreal, gave as much more to the establishment of divers works, and left more than two hundred thousand francs of his patrimony to support them after his death.  How many others did likewise!  During more than fifty years Paris sent to this mission only priests able to pay their board, that they might have the right to share in this evangelization.  This disinterestedness, unheard of in the history of the most unselfish congregations, saved, sustained and finally developed this settlement, to which Roman Catholics point to-day with pride.  The Seminary of Paris contributed to it a sum equal to twice the value of the island, and during the first sixty years more than nine hundred thousand francs, as one may see by the archives of the Department of Marine at Paris.  These sums to-day would represent a large fortune.