Enguerrand VI, Lord of Coucy
Enguerrand VI de Coucy (1313–1346) succeeded his father in 1335 as lord of Coucy and spent his short rule in Philip VI's war against Edward III of England. In 1338 he married Catherine of Austria, daughter of Duke Leopold I, a match arranged to draw the Habsburgs to the French side.
In 1339 his men held the castle of Oisy against Edward III's ally Jean de Beaumont, and in January 1346 he fought in the Duke of Normandy's Gascon campaign.
That August he was killed in a skirmish just before Crécy. His young son Enguerrand VII succeeded him and in 1360, after Poitiers, was a hostage for King John II's freedom.