The former records how Pedro González de Lara , after he was captured Conquering by Alfonso VII for his part in the rebellion , joined Becoming_a_member the siege of Bayonne `` in order to bring him [ Alfonso the Battler ] back to Castile '' ( `` ut reducere eum in Castellam '' ) because he wanted `` to wage war in Castile '' ( `` facere bellum in Castella '' ) , that is , continue the revolt .