All i know is this:
Sieur de La Salle was an explorer best known for leading an expedition down the Illinois and Mississippi rivers. He claimed the region watered by the Mississippi and its tributaries for France and named it Louisiana after King Louis XIV.
Source: “René-Robert Cavelier, Sieur de La Salle.” Biography.com, A&E Networks Television, 30 Mar. 2016, www.biography.com/people/ren%C3%A9-robert-cavelier-sieur-de-la-salle-38429.