of the battle, Otto retreated to his castle of Harzburg and was soon overthrown as Holy Roman Emperor, to be replaced by Frederick II. Count Ferdinand remained imprisoned following his defeat, while King John's attempt to rebuild the Angevin Empire ended in complete failure. Philip's decisive victory was crucial in shaping Western European politics in both England and France. In England, the defeated John was so weakened that he was soon required to submit to the demands of his barons and sign Magna Carta, which limited the power of the crown and established the basis for common law. The Battle of Bouvines marked the end of the Angevin Empire. Marital problems After the early death of Isabella of Hainaut in childbirth in 1190, Philip decided to marry again. On 15 August 1193, he married Ingeborg, daughter of King Valdemar I of Denmark, receiving 10,000 marks of silver as a dowry. Philip met her at Amiens on 14 August 1193 and they were married that same day. At the feast of the Assumption of the Virgin, Archbishop Guillaume of Reims crowned both Philip and Ingeborg. During the ceremony, Philip was pale, nervous, and could not wait for the ceremony to end. Following the ceremony, he had Ingeborg sent to the convent of Saint-Maur-des-Fosses and asked Pope Celestine III for an annulment on the grounds of non-consummation. Philip had not reckoned with Ingeborg, however; she insisted that the marriage had been consummated, and that she was his wife and the rightful queen of France. The Franco-Danish churchman William of Æbelholt intervened on Ingeborg's side, drawing up a genealogy of the Danish kings to disprove the alleged impediment of consanguinity. In the meantime, Philip had sought a new bride. Initial agreement had been reached for him to marry Margaret, daughter of Count William I of Geneva, but the young bride's journey to Paris was interrupted by Thomas, Count of Savoy, who kidnapped Philip's intended new wife and married her instead, claiming that Philip was already bound in marriage. Philip finally achieved a third marriage in June 1196, when he was married to Agnes of Merania from Dalmatia. Their children were Marie and Philip, Count of Clermont. Pope Innocent III declared Philip Augustus' marriage to Agnes of Merania null and void, as he was still married to Ingeborg. He ordered the king to part from Agnes, and when he did not, the pope placed