I have been working on this line for many years, but hit a brick wall a couple of years ago with extending the family lines back further. Here is the marriage record that is the last of the documented information on the family:

Francisco Cervantes married Maria de Alva on 15 Oct 1614 in Lagos de Moreno, Jalisco, México. His father is listed as Pedro Cervantes, no mother listed. Her parents were listed as Alonso de Alva and Leonor de Retamosa. Anyone familiar or connected with this lines, I would be happy to exchange notes or data. You can contact me at juanik979@att.net. Thanks