We need a little more to go on. What state or town, date.

Actually, I had a break-through – he was living in Ojo de la Rana Rancho
when he married Nicolaza Paula San Martin y Estrada in 1757 who was from
Rancho de Loera.

Now if I can only figure out where these old, probably gone, ranchos were,
relative to Tlaltenango….

de dónde eran? http://pilot.familysearch.org/recordsearch/start.html#searchType=close&surname=Martin%20estrada&givenName=nicolasa&p=recordResults fijate que prudencio se llamaba de primer nombre Bernardino en el acta de su hija Maria Juliana Errera San Martin 16 jan 1762 Tlaltenango, Zacatecas batch C60089-7 film 443805 Leticia Reynoso
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>> Does anyone know more about the ancestors of these individuals?
>
> All I”ve been able to ascertain is that Nicolaza’s mother was Manuela Estrada..
>
> ———-
> Alguien sabe mas de esta pareja que se casaron en 1757? No he podido encontrar los padres de Prudencio y solamente encontre la madre de Nicolaza que se llamaba Manuela Estrada

Nicolasa San Martin Estrada y Bernardino Prudencio Herrera tuvieron a:
Jose Francisco nace 4 oct 1777 bautiza 21 oct 1777
José aniceto bautizado el 3 may 1783 ( C607121 film 443008) y (C034430 film 44808)
Maria Alvina (7 jan 1871 born 25 dec 1780)
pudo haber sido hijo de Juan Martin y Prudencia Herrera buscar en el batch J600894 film 443802 posible hermano de Marcos Prudencio (bautizado el 7 may 1730)

The San Martin Y Estrada family are my ancestors. The were from el rancho La Era. I have found a couple of sources that place this ranch northeast of Tlaltenango. Please contact me if I can help or if this family is in your family tree, please. Thanks.