Battle of the Bridge of Cornellana
842 CE.
Shown on the map at 43.405°, -6.151°.
Nepotian (Latin: Nepotianus; Spanish: Nepociano) was briefly the king of Asturias in 842. Prior to that, he served as count of the palace under his predecessor, Alfonso II, to whom he may have been related. Both the nature of this relationship and the legitimacy of his rule are disputed by historians. When Alfonso II died in 842, his chosen successor, Ramiro I, was in Bardulia, where he was to marry a woman named Paterna. In Ramiro's absence, Nepotian, with the support of some members the nobility, usurped the throne illegitimately. Upon learning of Nepotian's usurpation, Ramiro gathered an army and began his journey back to Asturias. In the midst of Ramiro's return, Nepotian and his army composed of Asturians and Basques ambushed him near a bridge that crossed the Narcea river. However, Nepotian was abandoned by his army and he was forced to flee. He was captured in Pravia by two counts referred to as Escipion and Somnan; as punishment for his transgressions, he was blinded by Ramiro and imprisoned in a monastery. Nepotian's connection to Alfonso II is not certain.
Text from the Wikipedia article Nepotian of Asturias, licensed CC BY-SA 4.0.