What was the name of Napoleon's sister who married Prince Borghese?

Napoleon's sister who married Prince Borghese was Pauline Bonaparte. Born Maria Paola Bonaparte in Corsica in 1780, Pauline was the sixth child of Carlo Buonaparte and Letizia Ramolino, and Napoleon's younger sister.

Pauline first married General Charles Leclerc in 1797. After Leclerc died in 1802 during the expedition to Saint-Domingue, she married Camillo Borghese, the Prince of Sulmona, in 1803. The match strengthened Napoleon's political connections in Italy, where the Borghese family was one of Rome's leading aristocratic houses.

Pauline and Camillo's relationship was unhappy, but the marriage brought her the title Princess Borghese. Napoleon later made her sovereign Duchess of Guastalla in 1806, although she soon sold the small duchy to Parma while retaining the title. She was also known for her lavish lifestyle and for commissioning the famous neoclassical sculpture Venus Victrix from Antonio Canova.

A common mix-up is confusing Pauline with Napoleon's other sisters, especially Elisa, who became ruler of Lucca and Tuscany, or Caroline, who married Marshal Joachim Murat. Pauline was the Bonaparte sister who became Princess Borghese.