Bermudo III of León

He was a son of Alfonso V of León by his first wife Elvira Menéndez, and was the last scion of Peter of Cantabria to rule in the Leonese kingdom.

After Sancho's death, Bermudo III was immediately received back into León and soon began a campaign to recover the disputed territory between the Cea and Pisuerga from Castile and his brother-in-law Ferdinand.

Since the latter died without an heir, the kingdom of León now recognized Sancha and her husband as its rulers, and Ferdinand was anointed king in the royal city on 22 June 1038.

The united realm of León and Castile, with its rimlands of Asturias and Galicia, would become the political center of the north Iberian Christian society.

By his wife Jimena, daughter of Sancho III of Pamplona, Bermudo had one child, a son named Alfonso, who was born and died in 1030.