New Mexico formally became a territory of the United States in 1847 with the signing of the Treaty of Guadalupe Hidalgo, but, a revolt broke out in Taos Pueblo. Mexican Pablo Montoya and Tomasito, a leader at Taos Pueblo, led a force of Mexicans and Indians who did not want to become a part of the United States. They managed to kill Governor Charles Bent and others and marched on Santa Fe, but were finally subdued after taking refuge in the ill-fated San Geronimo Mission Church.