I am stuck on my great great grandfather Manuel Castaneda.

I am stuck on my great great grandfather Manuel Castaneda. My great grandfather’s birth record from Moyahua, Zacatecas (Hiliario de Jesus Castaneda) lists Rafael Castaneda and Simona Flores as paternal grandparents but I have not been able to find their birth or marriage records or for Hilario’s father, Manuel Castaneda. I do know that Manuel Castaneda was married to Secundina Yniguez, but do not know when or where. I have found one record that leads me to believe they may have come from Juchipila, but I can’t be certain this is correct. Is anyone else out there looking into these names???