Las Positas y la Calera (the little wells, or pools, and the lime-kiln).
Poso (pool, or well), in Kern County, and Poso in San Luís Obispo County.
Los Posos (the pools, or wells), in Ventura County.
La Posta (person who rides or travels post, post-house, military post, etc.). In the case of La Posta, 170 miles from the Mission Tule River Agency, it probably means post-station.
Potrero (pasture, generally for horses). See pages [46], [161] and [231].
Potrero de los Cerritos (pasture of the little hills).
Potrero Chico (little pasture).
Potrero Grande (big pasture).
Potrero y Rincón de San Pedro de Reglado (pasture and corner of St. Peter Regalato). St. Peter Regalato was a Franciscan, and was “especially distinguished for his sublime gift of prayer.” This was the name of a land grant.