In the meantime his quarrels with Urraca had not deterred Alphonso, who is surnamed the Battler in Aragonese history, from taking Saragossa in 1118, and from defeating the Almorvides at the decisive battle of Cutanda in 1120.
The marriage of Alphonso and Urraca was declared null by the pope, as they were third cousins.
But Urraca was tenacious of her right as proprietary queen and had not learnt chastity in the polygamous household of her father.
His flight from the monastery of Sahagun, where his brother Sancho endeavoured to imprison him, his chivalrous friendship for his host Almanun of Toledo, caballero aunque mon, a gentleman although a Moor, the passionate loyalty of his vassal Peranzules and his brotherly love for his sister Urraca of Zamora, may owe something to the poet who took him for hero.
Castile was left to his eldest son Sancho, Leon to Alphonso, Galicia to Garcia, Zamora and Toro to his two daughters Urraca and Elvira.