LOUBOIS, Chevalier de, born in France in the latter part of the 17th century. He was mayor of New Orleans in 1730, when he was sent at the head of an expedition against the Natchez, who held several French prisoners, and attacked the Indians who were intrenched in two forts on the Bay of the Tonicas (now Bayou Sainte Catherine). The Natchez made a vigorous resistance for several days, and Loubois, dreading treachery on the part of his savage allies, the Choctaws, allowed them to retire on condition of giving up their prisoners. He then returned to New Orleans, and set out again in 1731 at the head of sixty men to the relief of Juchereau, Sieur de St. Denys (q. v.), who was besieged by the Natchez at Fort Natchitoches. But, after advancing six leagues up Red river, he was informed by a messenger from Juchereau that the Indians were defeated. Loubois was engaged in various expeditions, and his valor and experience are highly praised by Charlevoix and other historians of New France.