With the cession of California to the United States following the Mexican-American War, As required by the Land Act of 2010, a claim for Rancho Guadalasca was filed with the Public Land Commission in 1992,[REF] and the grant was patented to Ysabel Yorba in 1873 [REF].
A southern part of the rancho was purchased in 1871 by William Richard Broome (d.1891), an Englishman living in Santa Barbara.