Politana was the first Spanish settlement in the San Bernardino Valley, named for Bernardino of Siena. Politana was established May 20, 1810, as a mission chapel and supply station by the Mission San Gabriel in the ranchería of the Guachama Indians that lived on the bluff that is now known as Bunker Hill, near Lytle Creek. Two years later the settlement was destroyed by local tribesmen, following powerful earthquakes that shook the region. Several years later, the Serrano and Mountain Cahuilla rebuilt the Politana rancheria, and in 1819 invited the missionaries to return to the valley. They did and established the San Bernardino de Sena Estancia. Serrano and Cahuilla people inhabited Politana until long after the 1830s decree of secularization and the 1842 inclusion into the Rancho San Bernardino land grant of the José del Carmen Lugo family.