 In 1860 Jose Jorge Rocha, the son of Don Antonio Jose Rocha, deeded Rancho La Brea to Henry Hancock.During the American Civil War (1861–1865), when there was considerable Confederate sympathy in Southern California, Hancock sided with the Union.He became major of the 4th California Infantry Regiment and for a time was commanding officer of Camp Drum, established to guard against pro-Confederate activities near Los Angeles.