Help needed on records

Hello everyone, I need help by locating the records on Mixtlan, Jalisco before 1898. In familysearch Mixtlan's rcords begin on that year. My question is: does anyone know where the pervous records are? Where to look at? The closest towns that I can figure out are Atengo, Atenguillo, Talpa de Allende, Mascota or Ameca.To which parrish Mixtlan reported before 1898? I am having a har time locating an ancestor that may be in Mixtlan abt. 1875 Any help prived would be very apreciated. Thanks in advance.