Aguascalientes has an outstanding library. How far back have you been able to go. It is important to remember that you are not going to find names as you may think so, or as you were told. An example, if I may. I was told that my aunt's father was named Encarnacion Gonzalez. That he had come from Cerralvo or Caderyeta, N.L. I started looking for an Encarncion and no marriage or anything. I looked for him in a US Census and he was listed as Encarncion married to an Alejandra. Again no luck. I looked at another Census 10 years later and he was again listed as Encarnacion, but now Alejandra was listed with her maiden name of Luera. I went to the Cadereyta records and found him. I was indeed Jose Concepcion de la Encarnacion. Sometimes you will find people with more that one given name.
Keep me posted if I can help e-mail me.
Juan M. Escobar