Jironza was made captain of the mobile "Presidio de las Fronteras de Sonora" force in 1691, operating from various temporary bases on the northern frontier including San Juan Bautista, and fighting against the Apaches, Janos, Jocomes, Upper Pimas, and Sumas.
Jironza was made captain of the mobile "Presidio de las Fronteras de Sonora" force in 1691, operating from various temporary bases on the northern frontier, the last being the mining camp of San Juan Bautista de Sonora. He fought against the Apaches, Janos, Jocomes, Upper Pimas, and Sumas.