Yolande of Dampierre

Yolande of Dampierre (1326–1395), also called Yolande of Flanders, was the daughter of Robert of Cassel and a great-granddaughter of Count Guy. She inherited Cassel after her brother John's death in 1332, and in 1338 married Henry IV, Count of Bar.

After Henry died in 1344 she was left with two small sons and took the regency of Bar for Edward II. The Pierrepont lords claimed it too; she made them back down by allying with Philip VI of France and the Duke of Lorraine, and Edward was declared of age in 1349.

He died in 1352, and Yolande kept the regency for her younger son Robert. King John II forced her out in 1353; his capture at Poitiers in 1356 removed Joan of Bar's royal backing, and Yolande ruled again until Robert came of age in 1359. She died in 1395.