François Vaillant de Gueslis

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François Vaillant de Gueslis (20 July 1646 - 24 September 1718) was a Jesuit missionary, born in Orleans. He entered the Society of Jesus, on the 10 November 1665, and went to Canada in 1670; and was ordained priest at Quebec, on the 1st December, 1675.

He attempted to convert the Mohawks to Christianity between 1679 and 1684. In the beginning of 1688 he was chosen by the Canadian authorities as ambassador to Thomas Dongan, the Governor of New York. He was also the first missionary to work among the Native Americans in Detroit; but he remained only a few months, not entering into the plans of Antoine Laumet de La Mothe, sieur de Cadillac. After the conclusion of peace between the French and the Iroquois he attempted to convert the Senecas from 1702-1707. There he contributed not a little to defeat the efforts of Colonel Schuyler at Onondaga who was trying to induce the Five Nations to drive out the French missionaries. The two principal scenes of his missionary zeal in Canada were Quebec and Montreal. At Quebec (1685-91; 1697-1702), he filled the important posts of minister; procurator of the mission, and preacher, and at Montreal (1692-96; 1709-15), he was the first superior of the residence established by the Jesuits in 1692. He founded the Men's Congregation of Villemarie which exists to the present day. He returned to France in 1715.