Haciendas of Zacatecas

Off the top of my head, I am looking for the parents of my ggggrandmother,
Urzina Hernandez. She was probably born in the 1830's or 1840's as she is the
second wife of Cayetano Borjon who was born in abt 1825. I am related to the
following families from this area: Borjons, Rincons, de Leons, Guererros, Ricos,
Montellanos, Betancourts, Arias',Mesas,Lunas, Garcias, Mergils, Buenos,
Magallanes',Amaros, Gonzalez',Hernandez',Carrillos, Laras, Villavencencios,
Amayas, Santos', Roldans, and last but not least Barrios'. I believe she may
have been born in Sauceda, Zacatecas or San Mateo, Zacatecas.  I have checked
LDS listings but have been unsuccessful.  Any suggestions on how to continue
when one has hit a brick wall?

Thank you for your interest.

Christopher Barrios de Leon