Los Adaes was the capital of Tejas (Texas) on the northeastern frontier of New Spain from 1721 to 1773. It included a Franciscan mission, San Miguel de Cuéllar de los Adaes, and a presidio, Nuestra Señora del Pilar de Los Adaes. The name Adaes derives from the indigenous Adai people, members of the Caddoan confederacy of Indians who were the people the missionaries aimed to convert to Christianity. The presidio and mission were established to counter French influence in Louisiana territory and defend New Spain from possible invasion or encroachment by the French. In 1763 Louisiana came under the control of Spain and the Los Adaes outpost was no longer necessary for defense. In 1773 the Spanish closed the mission and presidio and forced the population to move to San Antonio.