Important dates from exploration and colonization By Uriahwalters3 1519 Piñata maps Gulf of Mexico 1537 Cabeza de Vaca reports on explorations in texas 1682 Establish first mission at corpus cristi de la ysleta 1685 La sale settle fort St. Louis 1687 Father Hidalgo caused the Spanish to be suspicious of French colonization 1690 Establishes the mission San Francisco de los tejas in east Texas 1718 San Antonio founded 1719 East Texas missions are moved to San Antonio 1720 Mission San josa is complete in San Antonio and other missions are built