Henry Dalton, California land owner, rancher, and businessman, was born in London and engaged in the coastal trade in Peru and Mexico before acquiring property in Southern California in 1843. After his purchase of Rancho Azusa in 1844, Dalton eventually became the owner of five adjacent ranches. During the Mexican War, Dalton supported the Mexican side and suffered damages and losses of livestock on his properties as a result. After the war he lost much of his land to squatters and in litigation with the U.S. government. He spent the rest of his life trying to settle his claims against Mexico and the United States.
From the description of Papers of Henry Dalton, 1819-1942 (bulk 1840-1883). (Huntington Library, Art Collections & Botanical Gardens). WorldCat record id: 228732710