Almost immediately after taking possession and building an adobe house on what is now Boys' Republic in the city of Chino Hills, Lugo turned over the management of the ranch to his son-in-law, Isaac Williams (1799–1856.)

Williams settled in Los Angeles, became known as Julian by the locals, and worked as a merchant before marrying Maria de Jesus Lugo in 1839.

While at the Chino ranch, Williams successfully grazed thousands of cattle for the hide and tallow trade, taking these products to the crude harbor at San Pedro Bay.

The captured men were then taken to Paredon Blanco, now Boyle Heights, and held there for several weeks before being released on pledges to act peaceably.

A California Historical Landmark plaque has been installed at a fire department training facility in Chino Hills adjacent to the Boys Republic property to commemorate the battle.

As the Gold Rush brought great wealth to Williams via the beef trade with the many thousands of migrants arriving to California, there were also substantial problems with squatters on Spanish and Mexican-era grants.

[7] After Williams' death in September 1856, Rancho Santa Ana del Chino was left to his two daughters, Merced Rains and Francisca Carlisle.

Bridger built an adobe house on what is now Los Serranos Country Club in Chino Hills and served as ranch foreman from 1865 until his death in 1880.

Francisca Carlisle, meantime, married Scotch-born doctor, Frederick McDougal, who was a Los Angeles police chief and, from 1876 until his death in 1878, the city's mayor.

Rancho Santa Ana del Chino was sold in 1893 to a San Luis Obispo real estate magnate and then, within two years, to a British syndicate.