That battle saw the defeat of Otto IV and ultimately forced King John to sign the Magna Carta.
This ruler's quick divorce of Ingeborg of Denmark led his country to be put under an interdict, and one conflict involving this ruler saw him given the cities of Issoudun and Freteval by a ruler with whom he had signed the earlier Treaty of Gisors. This man also signed the Treaty of Bove after defeating the Count of Flanders at Amiens. This ruler's son was known as Louis the Lion, and he was the victor at a battle which saw the participation of a papal and the capture of William of Longsword. That battle saw the defeat of Otto IV and ultimately forced King John to sign the Magna Carta. For 10 points, identify this victor at the Battle of Bouvines, a French monarch who went on the Third Crusade with Richard the Lionheart, and whose name recalls that of a certain Roman emperor.
This ruler's quick divorce of Ingeborg of Denmark led his country to be put under an interdict, and one conflict involving this ruler saw him given the cities of Issoudun and Freteval by a ruler with whom he had signed the earlier Treaty of Gisors.
Philip II Augustus [accept Philip Augustus]