Henry V of Luxembourg "the Blond" born in 1216, died in Mainz on December 24, 1281, was the Count of Luxembourg from 1247 to 1281 and comte de Namur (under the name of Henry III) from 1256 to 1264. He was the son of Waleran III, Duke of Limburg and Ermesinde Ire, Countess of Luxembourg.
He married in 1240, Marguerite de Bar (1220 † 1275), daughter of Henry II, Count of Bar, and Philippe de Dreux. They were:
* Henry VI (1250 1288), Count of Luxembourg
I Waleran * (1288), Count of Ligny
* Philippa (1252 † 1311), married in 1270 to John I Avesnes (1247 † 1304), Count of Hainault and Holland
* Marguerite
* Jeanne (1310), abbess of Clairefontaine
* Isabelle (1247 † 1298), married in 1264 to Guy de Dampierre (1225 † 1304), Count de Namur and Flanders
His wife brought him into dot Ligny-en-Barrois, with the clause that remained under the suzerainty County Bar. In defiance of this clause, Henri le Blond paid homage in 1256 to Thibaut V, Count of Champagne. His brother-in-law, Thiébaut II, Count Bar, took advantage of a conflict between the Duke of Lorraine and the bishop of Metz to take revenge. Henry V is allied to Duke, Thiébaut alliance to the bishop. A battle objected to the two armies Prény September 14, 1266 and Henry was captured. On September 8, 1268, an arbitration with St. Louis, he returned to the possession of Ligny, under the suzerainty of Barrois.
It took them by surprise de Namur in 1256, while the marquis, Baldwin II of Courtenay, was in Constantinople. Baudouin ceded its rights to Namur Gui de Dampierre who hired and took the fight Namur. Finally the two were enemies of peace, and Gui married the daughter of Henri.
Count Henry (the Blond) de Luxembourg V 
- b.~ 1059 d.~ 1119
