I have read reports of four asistencias in the San Diego District. Santa Ysabel was attached to San Diego de Alcala. Mission San Luis Rey de Francia had two asistencias San Antonio de Pala and Las Flores. I am still researching the fourth asistencia but have read of St. Thomas Indian Mission at Fort Yuma, California at the extreme southeast corner of California. Mission Pal and Santa Ysabel also had outlying chapels that I am researching.

Mission San Gabriel Arcangel had an Estancia near modern day Redlands. This was not a sub-mission but a rancho, so it is properly referred to as an Estancia.

The Estancia de San Francisco Xavier was a ranching out-station, and probably a religious outpost, of Mission San Fernando. The estancia was upgraded to an asistencia.

Santa Margarita de Cortona was an asistencia of Mission San Luis Obispo de Tolosa. Established about 1787, what little remains is incorporated into the structure of a ranch barn on private land. The ranch house also incorporates parts of the original structures.

Mission San Rafael Arcángel began as an asistencia to Mission San Francisco de Asis and was upgraded to a full mission.

There may well be more and I hope to find them in time.