Louis III, Count of Blois
Louis III of Châtillon, son of Louis [II, Count of Blois] and Jeanne of Hainault, was count of Blois and lord of Avesnes 1346-1372, and count of Soissons 1346-1367.
After the Battle of [Poitiers (1356)|Battle of Poitiers], he had to send his brother Guy as a hostage to London, and ultimately sold Soissons to Enguerrand [VII de Coucy] to ransom him.