Margaret of Bar
Margaret of Bar (c. 1225–1275) was the eldest daughter of Count Henry II of Bar. In 1240 she married Count Henry V of Luxembourg, bringing Ligny-en-Barrois as her dowry.
A dispute over that fief led her brother Count Theobald II of Bar to war on Henry, who was captured at Prény in 1266 and freed through King Louis IX's arbitration in 1268. Her children included Henry VI of Luxembourg, Waleran of Ligny, Isabelle and Philippa.