ブーヴィーヌの戦い
Count Renaud of Boulogne obtained the title by abducting and marrying Countess Ida in 1190, and later gained title to Dammartin and Aumale. An early friend of King Philippe II Augustus, he turned against the king by joining the forces of the Holy Roman Empire at the Battle of Bouvines in 1214 (where he was defeated, captured, imprisoned and committed suicide).