sentences:  The surrounding land grants or ranchos were granted by the Mexican government after Mexican independence in 1821.José Antonio Yorba built an elaborate adobe hacienda, El Refugio (the Refuge), located near present-day First and Sullivan Streets in western Santa Ana.With the Mexican Cession of California to the United States following the Mexican–American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored.