Mission San Pedro y San Pablo de Bicuñer

Mission San Pedro y San Pablo de Bicuñer was founded on January 7, 1781, by the Spanish Franciscan friar Francisco Garcés, to protect the Anza Trail where it forded the Colorado River, between the Mexican provinces of Alta California and New Navarre.

The Mission site and nearby pueblo were inadequately supported, and Spanish colonists seized the best lands, destroyed the Indians' crops, and generally ignored the rights of the local natives.

[1] In retaliation, the Quechans (Yuma) and their allies attacked and destroyed the installation and the neighboring Mission Puerto de Purísima Concepción during a three-day period, from July 17–19, 1781.

Some 50 Spaniards, including Father Garcés (along with three other friars and Captain Fernando Rivera y Moncada) were killed, and the women and children taken captive.

The Indians' victory closed this crossing and seriously crippled future communications between Las Californias province and colonial Mexico, both within the Viceroyalty of New Spain.