Jose Rodriguez Perez, Zacatecas- I have hit a wall looking for my Grandfather and his family

I have hit a wall, looking for my Grandfather and his family.

Jose Rodriquez Perez 1911 from Zacatecas? was Aguascalientes within Zacatecas borders at that time?

His Fathers name is Jesus Perez

His Mothers name is Refugia Rodriguez

I have asked my Father and he says that he does not know.
At this point, I am not sure if he really does not know or for some reason is
not open to remembering.

I have had success with my Mother's side of the family and
have been able to go back 7 & 8 generations.

Does anyone have any suggestions on this search? Thank you!