Jeanne, Dame de Chateaudun was born around 1227 in France. Her father was Geoffrey VI, Viscount de Chateaudun and her mother was Clémence des Roches. She married Jean I de Montfort in March of 1248 and the pair had a daughter, Beatrice. Jean died during the Seventh Crusade in 1249 while in Cyrpus. She married again, this time to Jean de Brienne, Grand Butler of France and son of the King of Jersuluam and Emperor of Constantinople in 1251. She had her second daughter with her new husband, Blanche. In 1265 she attained the additional title of Dame de Chateau-du-Loir. She eventually passed on her title of Loupeland to Blanche. It is unknown when she died.