It could be that you are a descendant of José Antonio Aguirre married to Maria del Rosario Estudillo Jan 11, 1842.Maria del Rosario was the daughter of José Antonio Estudillo and Maria Victoria Dominguez.
If this is so then you must know about "El Rancho Tejón" located in Kerns County, California.El Rancho Tejón was the second largest ranch in the United States and Largest in California.
José Antonio Aguirre and Maria Rosaria Estudillo had 3 children, Dolores who married into the Pico Family, José Antonio II and Martin.The Estudillo family Patriarch was José Maria Estudillo born in Andalusia, Spain, in 1772 and died in San Diego, California April 8 1830.José Maria and others founded the city of Old San Diego.
If you can prove descendancy from José Antonio Aguirre, then you could be entitled to a great deal of money from the "Mineral Rights" of "El Rancho Tejón".Gold, and Silverare being mined from the property, as well as, Oil.
Hope this is of some help.
Rodolfo José Villalba y Gutierrez Aguirre Garcia Escobar Palacios