help reading document

I have a document showing my 6th great grandmother and grandfather's marriage. I do not speak or read spanish. I need help reading and understanding the document, especially concerning his age and parents (Santiago Diaz and Juana Villalobos). Can anybody help me figure it out? I am hoping to be able to track my diaz line farther the parents. This is the link to the document.

https://www.familysearch.org/ark:/61903/3:1:S3HT-XKGZ-FQ?i=305&wc=M6QF-QMS%3A64894501%2C64894502%2C70416601&cc=1502404