He scored a great victory over England at the Treaty of Azay-le-Rideau, signed two days before the death of this man's Angevin rival, Henry II.
He suffered several military reversals midway through his reign, including the battle of Fréteval and Courcelles. He negotiated at Gisors with the English king in order to exclude the House of Champagne from royal influence, and this ruler settled a dispute over ownership of Vermandois with the Count of Flanders at the Peace of Boves. He scored a great victory over England at the Treaty of Azay-le-Rideau, signed two days before the death of this man's Angevin rival, Henry II. This man's one-day marriage to Ingeborg of Denmark led to an interdict on his kingdom, but he made great strides by decisively defeating the English king John at Bouvines. For 10 points, name this French king who went on the Third Crusade during his 1179 to 1223 rule and was nicknamed in reference to a Roman emperor.
He suffered several military reversals midway through his reign, including the battle of Fréteval and Courcelles.
{Philip Augustus} or {Philippe Auguste} or {Philip II} of France