On his first legatine visit Guy was present for the foundation of the Confraternity of Belchite by the Navarro-Aragonese king Alfonso the Battler. In 1134 Guy took part alongside Alfonso's forces in the Battle of Fraga, where he was captured by the Almoravids and imprisoned in Valencia. According to the contemporary "Chronica Adefonsi imperatoris" (I, §59) he was forced to pay 3,000 "maravedíes" to free himself, but according to another contemporary source, William of Malmesbury, he was liberated by the miraculous intercession of the Virgin Mary and Saint Ann, to whom he had been praying. This is an early connexion between Marian devotion and the "Reconquista".