Soria Search Inquiry

I have searched extensively but so far am unable to locate documents for my paternal Great-great-grandfather Barbaro Soria, although I have found his children, which gave names of his father and grandfather. The Soria family settled in the areas of Moyahua, Juchipila and Nochistlan, in Zacatecas, Mexico. I am familiar with the origins of the Soria name but cannot make a specific connection from Mexico back to their native Spain. They may have settled Central Mexico by way of the Gulf, or through South America, and maybe even from the Pacific side. I have been searching ancillary records such as day-by-day "defunciones," however, specific records in my searches are either missing for those particular years I wish to search, or are in "desorden" and offer no starting point. I wonder if anyone has connections to people in the area who could direct me perhaps to other church records I may not have seen. Perhaps even burial records in Moyahua, Juchipila and Nochistlan. I would welcome any new information.
My Grandfather, Juan Soria was born at El Ranchito, in Juchipila, 11 Feb 1888. His maternal side, Villalobos, has deep roots in Nochistlán. His father, Teodocio, was born at Mesquituta, in Moyahua, Zacatecas, 26 Mar 1867. I found no documents for Teodocio’s father, grandfather, or great-grandfather, names respectively: Barbaro Soria (wife – Sostenes Luna), Juan Soria (wife – Justa Estrada), and Antonio Soria (wife – Rosalia Portagal Rodriques).