A mix of settlers from the recently swelled with refugees Cantabrian and Basque coastal areas, were led under the protection of Abbot Vitulus and his brother, count Herwig, as registered in the local charters they signed around the first years of the 800's.
The minority of Count García Sánchez led Castile to accept Sancho III of Navarre, married to the sister of Count García, as feudal overlord.