Teocaltiche visit

My cousin is visiting Teocaltiche this November. He is researching the family surnames: Lopez, Martinez, Reyes; and places: Rancho Lo De Carrera, Villa Hidalgo (Paso De Sotos), Teocaltiche, Lagos de Moreno. He will be looking for marraige, christening, birth and death records. Are there any tips members can offer him? Thank you, L.Newman