[2][3] The purpose of the expedition was to establish a colony in San Antonio and make an agreement with the Tejas Indians, a Native American people who had been sighted on the banks of the Colorado River of Texas.
The group began its journey on April 5, 1709 at the San Juan Bautista mission on the Sabinas River (in present-day Mexico).
[1] As they progressed on their journey, the group made contact with several indigenous peoples they did not know, particularly with the Yojuanes and their allies, the Simonos and the Tusonibi.
The Amerindians insisted on taking the group to their villages, located along the Rio Brazos, and introducing them to their families.
[4] On April 28, after the failure of their last mission, the group left the region and took the road back to San Juan Bautista.