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In 1749, a Suplican priest, Abbé Picquet, built a mission fort named Fort de La Présentation, or Fort Oswegatchie, near the junction of the Oswegatchie River and the St Lawrence River.

Fort Oswegatchie

In 1749, a Suplican priest, Abbé Picquet, built a mission fort named Fort de La Présentation, or Fort…