Important dates from exploration and colonization By Sean.rabe 1519 Pineda maps coast of Mexico Pineda maps Gulf of Mexico 1537 Cabeza de vaca reports on explorations in Texas 1682 Establish first mission at Corpus Christi de la ysleta 1685 La Salle settles fort St. Louis 1687 Father Hidalgo caused the Spanish to be suspicious of French colonization 1690 Established the mission San Francisco de los tejas. First mission in east Texas 1718 San Antionio founded 1719 East Texas missions are moved to San Antonio 1720 Mission San Jose is completed in San Antonio and other missions are built