 It was founded by French Canadian brothers Pierre Le Moyne d'Iberville and Jean-Baptiste Le Moyne, Sieur de Bienville, to establish control over France's claims to "La Louisiane".Bienville was appointed as royal governor of French Louisiana in 1701.Mobile's Roman Catholic parish was established on July 20, 1703, by Jean-Baptiste de la Croix de Chevrières de Saint-Vallier, Bishop of Quebec.