According to image 13, first page, lines 6 and 7 from the bottom to the top, the bride says she is not related to the groom at all, neither by blood nor by family marriages. In the same image, second page, 4th line from the bottom to the top, it also says they are not related.
Victoriano Navarro

I will start looking at the first one. It's very interesting because it contains confirmation of the Miramontes, Haro, and Ortiz families of Tlaltenango. I cannot recall where I read it, but I believe that there was an Alonso Perez that lived with on of the MIramontes families from Tlaltenango but I believe his relationship is unknown. I'll look for the thread here on NR that contains that information. BTW..Nice find!