Capt. Gonzalo FERNANDEZ de Castro was born about 1598. According to the 1626 Census of the Villa de Cerralvo (Monterrey), Gonzalo Fernandez de Castro lived 7 leagues from the Villa. Two single Spanish soldiers, Juan de Olivares and Alonso Carrasco, lived with him. Parents: Juan FERNANDEZ de Castro and Mayor de RENTERIA.
Spouse: Maria RODRIGUEZ. Children were: Maria Mayor de RENTERIA, Clara de RENTERIA (aka Clara Fernandez de Castro), Diego FERNANDEZ DE CASTRO.

Source: Raul Longorias Genealogy database
http://www.raullongoria.net/Genealogy/FamilyTree/b61.html#P970