Important dates from Exploration and Colonization By Marshmallow.God1 1519 Pineda maps Gulf of Mexico 1537 Cabeza de Vaca reports on explorations in Texas 1682 Establish first mission at Corpous Cristi de la Ysleta 1685 La Salle settle Fort st. Louis 1687 Father Hidalgo caused the Spainish to be suspicious of the French colonization 1690 Established the mission San Francisco de los tejas in east Texas 1 Mission in east Texas 1718 San Antonio founded 1719 East Texas missions are moved to San Antonio 1720 Mission San Jose is completed in San Antonio and other missions are built