[5] In 1840, his daughter María Jacinta Pacheco (1813 – ) married Sebastián Nuñez, grantee of Rancho Orestimba y Las Garzas.
In 1850, his daughter María Isidora Pacheco (1829–1892) married Mariano Malarin (1827–1895), son of the grantee of Rancho Chualar.
[6] 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.
[10] James Dunne (-1874), who had come from Ireland to join the California Gold Rush, bought Rancho Bolsa de San Felipe and half of Rancho Ausaymas y San Felipe from Francisco Pérez Pacheco.
In 1862, James Dunne married Catherine O'Toole Murphy widow of Bernard Martin of Rancho San Francisco de las Llagas.