"Guachama Rancheria, lying along this road, was named San Bernardino May 20, 1810, by Francisco Dumetz. In 1819 it became the San Bernardino Rancho of Mission San Gabriel. The adobe administration building stood about 70 yds. north of this spot, an enramada serving as chapel. The Zanja was constructed to convey water from the mountains for irrigation. Control by mission fathers ended in 1834."

Marker is on Mission Road, on the right when traveling north.

Courtesy hmdb.org

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