Henry V of Luxembourg

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Henry V the Blond (1216 – 24 December 1281) was the count of Luxembourg from 1247 to his death and the count of Namur between 1256 and 1264 as Henry III. He was the son and successor of Waleran III of Limburg and Ermesinda of Luxembourg.

He married in 1240 Margaret, daughter of Henry II, Count of Bar, who brought him Ligny-en-Barrois as her dowry, though, by a clause in the marriage contract, it remained under the feudal suzerainty of the county of Bar. In contempt of this, Henry paid homage in 1256 to Theobald II of Navarre, in his capacity as Count of Champagne. Henry's brother-in-law, Theobald II of Bar, took advantage of the conflict then raging between Frederick III of Lorraine and the bishops of Metz. Henry V was a partisan of the duke and so Theobald took the side of the bishop. Henry was captured in battle at Prény on 14 September 1266. On 8 September 1268, King Louis IX arbitrated between the two counts and Henry was freed and repossessed of Ligny, but under the suzerainty of the Barrois.

In 1256, Henry seized Namur while the reigning margrave, Baldwin II, was also reigning emperor in Constantinople. Baldwin relinquished his rights to Namur to Guy of Dampierre, Count of Flanders, who retook the margraviate from Henry. The two parties made peace and Guy married Henry's daughter.

From Margaret he had the following issue:

• Henry VI, Count of Luxembourg
• Waleran I (d.1288), Count of Ligny & Roussy
• Henry, bastard of Luxembourg (d.1288), married Isabelle of Houffalize, heiress of Houffalize.
• Isabelle (1247-1298), married Guy de Dampierre
• Philippa (1252-1311), married John I of Hainault
• Margaret
• Felicitas
• Joanna (d.1310), Abbess of Clairefontaine

Preceded by Ermesinda	Count of Luxembourg 1247–1281	Succeeded by Henry VI
Preceded by Baldwin II	Margrave of Namur 1256–1264	Succeeded by Guy