The blog gives Isabel González as Jacinto’s mother.

Source occurrence
Isabel González
Explore names on the mapRole in this source: Mentioned in the source
Given by the blog as Pedro Álvarez’s wife.
Claims & citations
Record
The Álvarez da Lama of Arnoia · heraldry blog
Heraldys blog, “Origen y significado del apellido Álvarez” (2014), section on the Álvarez da Lama of Arnoia
A secondary genealogy that attributes earlier Álvarez generations of the house of Verea to the 1743 hidalguía, but the photographed 1743 file contains none of them. It is retained as a labelled published claim; every link from it is a candidate.
Source detailsPublic archival link pending