Example image of eyePlorer eyePlorer map for 'Iron Crown of Lombardy': Relic Milan Monza Cathedral Nail (relic) Constantine I Helena (Empress) True Cross Lombards Migration period Northern Italy Theodelinda Charlemagne Kingdom of Italy (medieval) Pavia Frederick I, Holy Roman Emperor Henry IV, Holy Roman Emperor Otto I, Holy Roman Emperor 1026 Conrad II, Holy Roman Emperor March 1 Roman Catholic Archdiocese of Milan 1530 Bologna Charles V, Holy Roman Emperor February 22 Pope Clement VII 1805 King of Italy May 26 Napoleon I of France Formation of the Napoleonic Empire June 15 Order of the Iron Crown 1816 January 1 1838 Ferdinand I of Austria Kingdom of Lombardy–Venetia September 6 Third Italian War of Independence Vienna Herman Melville Moby-Dick Alessandro Blasetti The Iron Crown Brewer's Dictionary of Phrase and Fable Ebenezer Cobham Brewer Philipp Blom Aleramici Coat of arms of Napoleonic Italy