The principal portions of San Marino were included in a Mexican Land Grant in 1830 to an Indian lady named Senora Victoria Reid, the widow of an Englishman. She named her Rancho, Huerta de Cuati. Prior to this grant , the area was part of the San Gabriel Mission (the “Old Mill” was the grist mill for the Mission), and before that was occupied by the Gabrielino Indians with their village located at what is now Huntington School.
In 1852, Mrs. Reid deeded her Rancho to Don Benito Wilson. Later, Wilson deeded the main portion to J. de Barth Shorb, who named his Rancho after his grandfather’s plantation in Maryland, which in turn had received its name from the Republic of San Marino, in Italy.