According to the informacion matrimonial of my ancestor Emeterio Ramirez who got married in Michoacan in 1858 he was 38 during that time and was from Teocaltiche Jalisco. It also says his parents were Santiago Ramirez and Rafaela Ponce but after reading other documents I think his father was actually called Santos Ramirez.
Most of the files from that era and place including surrounding areas in Jalisco are indexed but I actually checked them anyway and found nothing. Apparently the family moved to Michoacan at some point but the only one who returned or remained there was his sister Josefa Ramirez who married Juan Gomez in 1847 in Atotonilco el Alto, Jalisco.
I don't know if I'm doing something wrong in my research, I dont have experience with this region so I would like to read other opinions on this brickwall.
https://www.familysearch.org/en/tree/pedigree/landscape/G8BQ-DY4
I looked around saw this...
I suspect that "Santos" and "Santiago" are the same person. You will note that many Mexican documents use alterations and nicknames for the original name. Preponderance of information indicates that for the children being born and married that mention these names is the he is one and the same.
Check this tree and see if it lines up with your info....