Security Guard in Montebello, CA

Historic occupants of the land along the Rio Hondo River were the indigenous Tongva (also known as Gabrielino), a portion of the Uto-Aztecan family of Native Americans. The Tongva occupied much of the Los Angeles basin and the southern Channel Islands – Santa Catalina, San Nicolas, San Clemente and Santa Barbara.

When the explorer Juan Rodríguez Cabrillo arrived off the shores of Santa Catalina in 1542, he was met by the Tongva people. Because the language of the Tongva was different from the neighboring tribes, the Spanish called them “Gabrielino”. As more non-natives arrived and established settlements, diseases that were endemic among them caused high mortality among the Tongva and other indigenous peoples. These were new infectious diseases to them. By 1870, the area had few remaining indigenous inhabitants.

Father Angel Somera and Father Pedro Cambon, both Franciscan missionaries, founded the original Mission San Gabriel Arcángel, called Mission Vieja, on September 8, 1771. Today the site is near the intersection of San Gabriel Boulevard and the Rio Hondo River. The establishment of this mission marked the beginning of settlement by Spaniards in the Los Angeles region; it was the fourth of twenty-one missions that they ultimately established along California’s El Camino Real. The mission did well initially as a farm and cattle ranch.