ウンベルト2世
Prince Amedeo of Savoy-Aosta, 5th Duke of Aosta (Amedeo Umberto Costantino Giorgio Paolo Elena Maria Fiorenzo Zvonimir di Savoia; 27 September 1943 – 1 June 2021) was a claimant to the headship of the House of Savoy, the family which ruled Italy from 1861 to 1946. Until 7 July 2006, Amedeo was styled Duke of Aosta; on that date he declared himself Duke of Savoy, a title that was disputed between him and his third cousin, Vittorio Emanuele, Prince of Naples, only son of King Umberto II of Italy.