Researching Franco family from Tepatitlan, Jalisco

I have been researching for about 2 years and have hit a brick wall. My 6x great grandfather was Blas Esteban Franco who married Margarita Liberata de Aiola Ramires on 08 Oct. 1736 in Tepatitlan, Jalisco. Below is the link to their marriage record. The record is found in the upper left hand side of the page.

https://familysearch.org/pal:/MM9.3.1/TH-1-18570-65953-5?cc=1874591&wc=M99L-VZ1:n1521880738

In the marriage record it states that Pedro Franco and Micaela Baeza were Blas Esteban's parents. I haven't been able to find any information on the parents so that is were my road ends. I was able to get a hold of the book Retonos de Espana en la Nueva Galicia by Don Mariano Gonzalez-Leal. I wasn't able to find any mention of my family line in the chapter about the Franco family. I know that one of the patriarchs was Pedro Franco de Paredes and that he had an illegitimate son who he named Pedro. Could this Pedro be my 7x great-grandfather or could he be a link to my family?

If anybody has researched this family and can give me any information, please let me know. I am so thankful for this forum and for the many members who help the novice researchers like me. Again thank you.
Anita