Genaro Codina - composer

I am trying to document my link to Genaro Codina, composer of Marcha Zacatecas. He was born in the city of Zacatecas in 1852 to Santiago Codina and Maria Dolores Fernandez. Family history has it that he was 'primo hermano' (first cousin) to my great grandfather, Mucio Codina. That would make Genaro's father and Mucio's father brothers and their father would be Jose Eufracio Codina.

Jose Eufracio married in Jerez, Zacatecas and had several children there but I found no record for Santiago Codina. FamilySearch IGI has an unsourced record for Santiago's marriage in Zacatecas, Zacatecas in 1851 but I have been unable to find the church record in the Family History Library films. My search has been hampered by missing years in the films.

If anyone has run across any of there names in your research, I would greatly appreciate your help.

Omar Codina