Rodolfo, more information is needed. It doesn't have to be all of the following but every little bit counts. Try and find out such things as a birthdate or approx age at death, marriage date, location of marriage, date of entry into the U.S., and names of great-grandparents, names of the siblings of your grandparents and who they married.
You could get a Y-DNA test and a Family Finder test at www.familytreedna.com
and see if you can find matches and there is a chance that through your DNA matches you can determine if your line is Martín del Campo, Martín de Sotomayor, or another Martín or Martínez family that settled in Aguascalientes. Many of the families would switch back and forth between Martín and Martínez.