ALPHONSO II. (789-842), his {whose?} reputed
grandson, bears the name of "the Chaste." The Arab writers
who speak of the Spanish kings of the north-west as the
Beni-Altons, appear to recognize them as a royal stock derived
from Alphonso I. The events of his reign are in reality
unknown. Poets of a later generation invented the story
of the secret marriage of his sister Ximena with Sancho,
count of Saldana, and the feats of their son Bernardo del
Carpio. Bernardo is the hero of a cantar de gesta (chanson de
geste) written to please the anarchical spirit of the nobles.
Initial text from 1911 encyclopedia -- Please update as needed