Editing Amadeus IV, Count of Savoy (section)

===Among European powers===
Amadeus faced many challenges in balancing the demands of the greater powers in Europe at that time. [[Henry III of England]] wrote to Amadeus in 1235 to seek his consent and blessing to marry the Count's niece, [[Eleanor of Provence]]{{sfn|Mugnier|1890|pp=17-18}} In 1238, Amadeus went to the court of [[Frederick II, Holy Roman Emperor]], in Turin, where he was knighted by the Emperor.  Then with his brothers, he led troops as part of the siege of [[Brescia]].{{sfn|Cox|1974|pp=65-67}} In July 1243, Amadeus and his brother Thomas were ordered by [[Enzo of Sardinia]] to join him in a siege of Vercelli, which had recently switched allegiances from the Empire to the Pope. Not only was the attack on the city unsuccessful, but Amadeus and his brother were excommunicated for it.{{sfn|Cognasso|1940|p=256|ps= vol.II}} When the brothers wrote to the new [[Pope Innocent IV]] to appeal the excommunication, he granted their request.

In late 1244, when Pope Innocent IV fled from [[Rome]], Amadeus met him in Susa and escorted him through the passes to Chambéry, and then provided his brother [[Philip I, Count of Savoy|Philip]] as escort for the Pope downriver to [[Lyon]]. However, Amadeus was then willing to open the same passes to the imperial army. He also signed a treaty with Henry III on 16 January 1246 which gave rights of passage through the passes to the English in exchange for an annual payment of 200 marks. That same month, Amadeus joined a force which went to [[Provence]] to rescue his niece, [[Beatrice of Provence]] from the forces of Frederick and escort her to her marriage to [[Charles I of Sicily|Charles of Anjou]]{{sfn|Cox|1974|pp=128-153}} By May 1247, Frederick was ready to move against the Pope. He had gathered his army in Turin, and ordered those still loyal to him in the kingdoms of Arles and France to meet at Chambéry (the capital of Savoy). However, the revolt of [[Parma]] pulled Frederick back from this plan. That same summer, Amadeus blocked an attempt by the Pope to send 1500 soldiers to the Lombard League. On 8 November 1248, Frederick asked Amadeus and his brother Thomas to go to Lyon and start negotiations for peace. However, their efforts were unsuccessful and the war continued until the death of Frederick.{{sfn|Cox|1974|pp=179-184}}