Henry V, Count of Luxembourg

Henry V the Blond (1216–1281) inherited Arlon from his father Waleran III in 1226 and Luxembourg from his mother Ermesinde in 1247. His 1240 marriage to Margaret of Bar brought him Ligny, though a feud with Theobald of Bar over its suzerainty led to his capture in 1266 and release in 1268.

He seized Namur in 1256 while Margrave Baldwin II was in Constantinople; Baldwin sold his rights to Guy of Dampierre, who retook Namur. Henry joined Edward of England on the Ninth Crusade and returned after a truce with the Mamluks. He died in 1281; his sons fell at Worringen in 1288.