The Kingdom of Italy was born on 17 March 1805, when the Italian Republic, whose president was Napoleon Bonaparte, became the Kingdom of Italy, with the same man as King of Italy, and the 24-year-old Eugène de Beauharnais his viceroy. Napoleon I was crowned at the Duomo di Milano, Milan on 23 May, with the Iron Crown of Lombardy. His title was "Emperor of the French and King of Italy", showing the importance of this Italian Kingdom for him.