Joan of Savoy

Joan of Savoy (c. 1310–1344) was the only child of Edward, Count of Savoy, and Blanche of Burgundy. In 1329 she married John III, Duke of Brittany. When her father died the same year, she claimed Savoy, but her uncle Aymon, backed by the nobility under semi-Salic law, succeeded instead.

She pressed her claim until 1339, when she renounced it for a pension of 6000 livres. Her childless marriage left the Breton succession disputed when John III died in 1341, and she died in 1344.