Esparza Amatlan to Cocula

Hi. I'm stuck and need some help. Looking for records for Juan Esteban (or Estevan) Esparza and his Father Gregorio Esparza. I have Esteban marriage record to Maria Luciana Preciado in 1791 in cocula jalisco. In it, it says he is 24 so I can assume he was born in 1767. However sometimes they're not sure of their age. 2 family members were wrong on their age on their kids birth records. When I found their birth records they were off by 5 years. That could be one reason I can't find his recoredd. The other is that it says he's from El Pueblo de Amatlan, I'm guessing it's Amatlan de Canas in Nayarit. How he went from there to Cocula I'll probably never know. Says parents were Gregorio Esparza and Mariana Lopes. I can't find any other record to confirm age and birth place. The only Record i have found in Amatlan through Gregorio and Mariana is a Joseph Raphael De la Cruz Esparza born in 1768. Possibly a brother. I don't know how else to find it other that going through every single entry for at least a decade. I also don't know how to find Gregorio's birth date so I can continue going back. I want to trace all the way back to Spain to the town of Esparza in Navarro. Can anyone help with any info or suggestions.

Here is the Marriage record.
https://familysearch.org/pal:/MM9.3.1/TH-1-18430-34984-18

Its the last entry bottom right and goes for the next couple pages. If anyone can find more information on it, it would be greatly appreciated. I still have trouble reading and understanding some words and abbreviations. Such as the ranch he's from. And the word that looks like THO, I know its an abbreviation and i see it everywhere but have no clue what it means

This is the record for Esteban possible brother https://familysearch.org/pal:/MM9.3.1/TH-1-17946-28217-14

Thanks!!