Joan (c. 1205 – 17 January 1271) was the Countess of Chiny and last descendant of the male line of the Carolingian dynasty.Arlette Laret-Kayser, Entre Bar et Luxembourg : Le Comté de Chiny des Origines à 1300. Bruxelles (Crédit Communal, Collection Histoire), 1986. Joan was the daughter of Louis IV, Count of Chiny, and Matilda of Avesnes, and became ruler of the county upon her father’s death on 7 October 1226. She married Arnold IV, Count of Loon,Thonissen, J. J., Arnold IV, Royal Academy of Belgium, National Biography. Vol. 1, 1866. son of Gerard III, Count of Rieneck, and Kunigunde von Zimmern, in 1228, whereupon he assumed the role of Count of Chiny.
Joan and Arnold had the following children: John I, Count of Chiny and Loon Arnaul II (died 1273), Bishop of Châlons (1272–73) Henry, Seigneur d’Agimont Gerard (died after April 1284), Seigneur de Chauvency le-Château, married Marguerite de Meurs Elisabeth (died before 1251), married Thomas III of Coucy, Seigneur of Vervins, and Albert, Seigneur of Voorne Adelaide (died after 1268), married to Thierry II, Seigneur of Valkenburg Juliana, married to Nicolas, Seigneur of Quiévrain Louis V, Count of Chiny Margaret (died 1292)?, married William IV, Lord of Horn
She was succeeded as ruler of Chiny by her husband, Arnold II, Count of Chiny.
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