In 1305, Joanna married Walter V of Brienne, the son of
Hugh of Brienne, Count of Brienne and Lecce, and Isabella de la Roche. The marriage produced two children: •
Walter VI of Brienne, Count of
Brienne,
Lecce, and
Conversano, titular
Duke of Athens (died 19 September 1356), married firstly Margharita of Anjou-Tarent, and secondly, Jeanne de Brienne. His children by both wives died young, so his titles, possessions, and claims were inherited by his sister Isabella. •
Isabella, Countess of Brienne,
Countess of Lecce and
Conversano, claimant to the
Duchy of Athens, and the
Kingdom of Jerusalem (1306–1360), married Walter of Enghien, by whom she had eleven children. On 15 March 1311, Joanna's husband Walter was killed in the
Battle of Halmyros against the
Catalan Company. Joanna may have tried to hold the
Acropolis of Athens against them but eventually surrendered it. She returned with her son
Walter VI to France, though her retainers continued to possess
Argos and Nauplia under
Walter of Foucherolles. In April 1318, Joanna and her father sent a request to the
Republic of Venice seeking money and ships for knights and infantry to
Negroponte or
Nauplia. The request, however, was refused, as the Briennist vassals in Greece had turned to the Catalans in the meanwhile. As late as the next year, however, Walter of Foucherolles was still commanding his vessels in the
Argolid to remain loyal to Joanna and the young Walter. By constant petition to the
King of Naples, the
King of France, and the
Pope, Joanna kept her claim to Athens alive for her son until he was old enough to campaign for his rights in the
Aegean. In January 1321,
Philip V of France mediated the suit brought against her by her own son, who was suing for the payment of some of his father's great debt. Joanna herself retained her ducal title until her death. Her tomb, in the church (now destroyed) of the
Dominican monastery in
Troyes had the inscription ''Duchesse d'Athènes''. ==Notes==