Fernando Bermúdez (died c. 978), second Count of Cea, was the son of Bermudo Núñez and his wife Argilo.
[1][2][a] As the father of a queen of Navarre, and therefore, ancestor of many royal houses, Fernando was a distinguished member of the highest ranks of the nobility of the Kingdom of León.
The relationship is also confirmed in a charter dated 984 when it mentions that this monastery had acquired a certain property from count Fernando Bermúdez that had previously belonged to the bishop.
He was the mayordomo mayor of this king, confirmed many of his royal charters as an active member of the curia regis, and appears for the first time in 960 with the title of "Count".
[7] He married Elvira Díaz, daughter of Diego Muñoz, count of Saldaña, and his wife Tregidia.