Who married Louis François Joseph, Prince of Conti?

Louis François Joseph de Bourbon or Louis François II, Prince of Conti (French pronunciation: [lwi fʁɑ̃swa ʒozɛf də buʁbɔ̃]; 1 September 1734 – 13 March 1814), was the last Prince of Conti, scion of a cadet branch of the House of Bourbon, whose senior branches ruled France until 1848.

Louis was the only child of his parents and lived a secluded childhood at his father's chateau, after the death of his mother in 1736. He later married his first cousin, with the union producing no children. During the French Revolution he stayed in France until 1797 when he was exiled to Spain where he died in 1814, less than a month before his family were restored to the throne of France; with his death the house of Bourbon-Conti became extinct.

Maria Fortunata d'Este (24 November 1731 – 21 September 1803) was a Modenese princess by birth and a princess du sang by marriage. By her marriage to Louis François Joseph de Bourbon, Prince of Conti, her first cousin, she became the Countess of La Marche and later the Princess of Conti; and was a member of the French court of Kings Louis XV and Louis XVI. She was the last Princess of Conti, and died without issue.