Joan, Countess of Rethel
Joan of Rethel (died 1328) was the only daughter of Count Hugh IV of Rethel and Isabella of Grandpré, and succeeded her father as countess of Rethel in 1285. In 1290 she married Louis I of Nevers, son of Count Robert III of Flanders, and the marriage was notoriously quarrelsome.
She was also countess of Nevers until Louis's death in 1322. Her children were Joan, who married John of Montfort in 1329, and Louis of Crécy, later count of Flanders and Rethel. Joan ruled Rethel until her death in 1328.