Dispensas help; Pinedo research

Hey everyone,

In my direct paternal ancestor search, I found the following record:

Gregorio Pinedo m. Agustina Ulloa
Place/date: Monte Escobedo, Zacatecas, 28 April 1834
Gregorio Pinedo's parents: Bartolo Pinedo and Maria Gonzales
Agustina Ulloa's parents: Crisanto Ulloa and Juana Contreras
Source: Monte Escobedo, Matrimonios 1799-1877 (p225 of 722)

In looking at this record, there's the following reference: "previa la dispensa de cuarto con cuatro grado de consanguinidad de que fueron dispensados (?) la sagrada mitra de Guadalajara."

I'm actually new to the Mitra de Guadalajara. Where can I find this dispensa? Does anyone know of an index for this time period. I saw there's a website (guadalajaradispensas.com), but I don't see this time period up.

Any help is appreciated!

Chris PIneda