Maximilian Joseph Eugene Auguste Napoleon de Beauharnais, 3rd Duke of Leuchtenberg, Prince Romanowsky was the husband of Grand Duchess Maria Nikolayevna of Russia and first cousin of Emperors Napoleon III of the French and Francis Joseph I of Austria. He was a grandson of Napoleon I's first wife, the Empress Josephine, by her prior marriage to Alexandre de Beauharnais.

Joséphine Bonaparte was Empress of the French as the first wife of Emperor Napoleon I from 18 May 1804 until their marriage was annulled on 10 January 1810. As Napoleon's consort, she was also Queen of Italy from 26 May 1805 until the 1810 annulment. She is widely known as Joséphine de Beauharnais.