Cybersecurity in Azusa, CA

The place name “Azusa” dates to the Mexican Alta California era in the 19th century when Azusa was used to refer to the San Gabriel Valley and the San Gabriel River. It appears to have been derived from the Tongva place name Asuksa-nga.The area was part of the Tongva peoples’ (Gabrieleño Indians) homeland since at least 55 BC. A backronym, “Azusa stands for everything from A to Z in the U.S.A.”, has been a phrase used to promote the city by organisations such as the Chamber of Commerce for many years.

The first Mexican settlement in Azusa was at the Rancho el Susa in 1841, a Mexican land grant from the Alta California Governor Juan Bautista Alvarado to Luis Arenas. In 1844, Arenas sold the rancho’s land to Henry Dalton, an English immigrant and wealthy merchant from the Pueblo of Los Angeles, for $7,000. He renamed it Rancho Azusa de Dalton, and had built a winery, distillery, vinegar house, meat smokehouse, and flour mill. Also, a vineyard was planted. Dalton built a house here on a place known as Dalton Hill, near 6th Street and Cerritos Avenue in Azusa.

Dalton was also the owner of the large, adjacent Rancho San Francisquito and Rancho Santa Anita properties. In the end, Dalton owned an unbroken expanse of land from present-day San Dimas to the eastern edge of Pasadena. A portion of Azusa west of the San Gabriel River was within adjacent Rancho Azusa de Duarte.