With the 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. As required by the Land Act of 1851, a claim for Rancho San Vicente y Santa Monica was filed with the Public Land Commission in 1852. Francisco Sepulveda died in 1853. The dispute over the boundaries continued and was not settled until the question came into the United States courts. After long litigation, the Rancho San Vicente y Santa Monica grant was patented to the Sepulveda heirs at in 1881.