Antoine Laumet, known as “de Lamothe Cadillac,” explorer, seigneur in Acadia, commandant of Fort Michilimackinac, founder of Detroit and of the first colony in Ontario, governor of Louisiana (born 5 March 1658 at Saint-Nicolas-de-la-Grave, France; died 16 October 1730 at Castelsarrasin, France).1
Médard Chouart Des Groseilliers, explorer, fur trader (bap at Charly-sur-Marne, France 31 July 1618; d at New France 1696?). A man of courage who valued personal freedom and initiative, Des Groseilliers opened Lakes Michigan and Superior to the fur trade and Jesuit missionaries.
Returning to France he fell in with a scheme of Bernou's to establish a base at the mouth of the Rio Grande for the conquest of Mexico. To make it seem more feasible to the king he falsified geography, situating the Mississippi over 600 miles west of its true course.1