Pérez de Urbel emphasises that there is no proof of the parentage of Gutina Díaz, wife of Fernando Muñoz. However, her grandson, conde Fernando González, confirming donations to San Félix made by conde Diego Rodríguez de Castilla, which suggests a close family connection. 1
Marriage Information:
Gutina married Fernando NÚÑEZ "él de Castrosiero", son of Nuño NUÑEZ. (Fernando NÚÑEZ died after 870.)
Sources
1 Foundation for Medieval Genealogy, Medlands: Gutina Díaz.