Pierre Joseph Céloron de Blainville
…New York, the expedition cut a road over the French Portage Road, and carried their boats and equipment overland to Chautauqua Lake, then followed the Chadakoin River and Conewango Creek to the Allegheny River, reaching it on July 29, 1749, in what is now the City of Warren, PA.. As it progressed, the expedition…