The link between the three supposed brothers Diego, Ero and Godesteo Fernández, shown in Part A, is speculative. The descendants of the first two are set out in Parts B and C. Ero Fernández was an important figure during the reigns of Ordoño II and Alfonso IV Kings of León and was created conde, based at Lugo in central Galicia.
ERO Fernández, son of [FERNANDO --- & his wife Gutina --- (-after 926, bur Santa María de Ferreira de Pallares). Conde de Lugo. He founded the monastery of Santa María de Ferreira de Pallares with his second wife[569]. He governed the county of Lugo during the reign of Ordoño II King of León[570].
m firstly ADOSINDA, daughter of ---. Her marriage is confirmed by the charter dated 11 Mar 934 under which "Rudesindus episcopus, Munionem, Froilanem, Adosinda et Ermesinda" (her grandchildren) agreed the division of territories inherited from "avorum nostrorum Hermegildi et Ermesinde, Eroni et Adosinde"[571].
m secondly ELVIRA, daughter of ---.