Tres Hermanos History

Presentation on the History of Tres Hermanos on May 6th

The Chino Hills Historical Society will host a presentation by Chino Hills resident and historian Paul R. Spitzzeri at 7:00 p.m. on Monday, May 6 at the Chino Hills Community Center, 14250 Peyton Drive. Spitzzeri will provide a slide-illustrated presentation about the remarkable and largely unknown history of Tres Hermanos.
Tres Hermanos Ranch, at nearly 2,500 acres, is the last large piece of undeveloped land in the region and is now in the hands of a joint powers authority involving the Cities of Chino Hills, Diamond Bar, and Industry. According to Mr. Spitzzeri, whatever awaits its future, there is some remarkable history to this nearly pristine property. This includes its use as public land during the Spanish and Mexican period, and as ranch land under several owners in the 19th century and early 20th century, including three “brothers” who weren’t blood relatives, but who did share a genealogy of power and influence in oil, real estate and media.
Mr. Spitzzeri has lived in Chino Hills for 22 years. He is the Museum Director at the Workman and Temple Family Homestead Museum in the City of Industry, where he has worked since 1988. He received his Bachelor of Arts degree and Master of Arts degree in history from California State University, Fullerton. He has also published local, regional and state history in many journals and anthologies. His book, The Workman and Temple Families of Southern California, won a 2009 Award of Merit from the American Association for State and Local History. Since 2008, Paul has maintained the blog  He also writes a monthly column about local history for Champion Newspapers.