Joan (French: Jeanne; died 1328) was the ruling countess of Rethel from 1285 until her death in 1328 and countess of Nevers as the wife of Louis I of Nevers (r. 1280–1322).
Life
Joan was the only daughter of Count Hugh IV of Rethel (r. 1272–1285) and his third wife, Isabella of Grandpré (1245–1292). She succeeded her father as countess of Rethel in 1285.
In December 1290, she married Count Louis I of Nevers (who, in 1314 failed in his bid to become Holy Roman Emperor), son of Count Robert III of Flanders. The marriage was described as "notoriously fractious".
They had two children:
Joan (1295–1375), married John of Montfort
Louis (1304–1346), Count of Flanders, Nevers and Rethel