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In page Alfonso the Battler:

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The king quarrelled with the church, and particularly the Cistercians, almost as violently as with his wife. As he defeated her,[citation needed] so he drove Archbishop Bernard into exile and replaced the abbot of Sahagún with his brother.[1] He was finally compelled to give way in Castile and León to his stepson, Alfonso VII of Castile, son of Urraca and her first husband. The intervention of Pope Calixtus II brought about an arrangement between the old man and his young namesake.[2]