Hamilton Creek was named after Jim Hamilton, an African American man who settled there after he lost his farm in Butterfield Valley after losing a lawsuit over ownership of the Rancho Pauba in the early 1880s.[2] Hamilton moved out to the lands of the Cahuilla, where he and two of his sons raised cattle at their ranch in the Anza Valley,[3] which was first known as the Hamilton Plain. Hamilton School in Anza was also named after him.[4][5]
^Steve Lech, Pioneers of Riverside County: The Spanish, Mexican, and Early American Periods, Arcadia Publishing, Dec 10, 2012, Notes, Chapter 4, note 58.