Thanks for the contact. I don't think I can help you at this point. I am only able to trace my line to 1850. This is what we know:
Espirion Villanueva b. 1850 married Atanacia Zapata b. 1854 Children: Rosenda, Pabla, Francisca, Epifanio, Guillermo (b. 1879) Guillermo is my great grandfather.Guillermo was a sheep-shearer.He lived in Lohn, TX and then Brady.
I did find a few death certificates regarding your Villanuevas at familysearch.org. If you haven't searched there, I highly recommend it! The records I found didn't offer much more than the info you sent me.
If I come across any links between our families or any info that might help you out, I'll send it your way.