(9 March 1796 - 10 January 1810) (divorced)
Napoleon married Joséphine de Beauharnais in 1796, when he was 26; she was a 32-year-old widow whose first husband had been executed during the Revolution. Until she met Bonaparte, she had been known as "Rose", a name which he disliked. He called her "Joséphine" instead, and she went by this name henceforth. Bonaparte often sent her love letters while on his campaigns. He formally adopted her son Eugène and cousin Stéphanie and arranged dynastic marriages for them. Joséphine had her daughter Hortense marry Napoleon's brother Louis.
Joséphine had lovers, including a Hussar lieutenant, Hippolyte Charles, during Napoleon's Italian campaign. Napoleon learnt the full extent of her affair with Charles while in Egypt, and a letter he wrote to his brother Joseph regarding the subject was intercepted by the British. The letter appeared in the London and Paris presses, much to Napoleon's embarrassment. Napoleon had his own affairs too: during the Egyptian campaign he took Pauline Bellisle Foures, the wife of a junior officer, as his mistress. She became known as "Cleopatra" after the Ancient Egyptian ruler.
While Napoleon's mistresses had children by him, Joséphine did not produce an heir, possibly because of either the stresses of her imprisonment during the Reign of Terror or an abortion she may have had in her 20s. Napoleon ultimately chose divorce so he could remarry in search of an heir.