skos:altLabel | - Crown Prince of Romania
- Ferdinand
- Ferdinand I
- Prince Ferdinand
- King Ferdinand
- '''Ferdinand I'''
- King Ferdinand I
- Prince Ferdinand I
- Queen consort<br />of Romania
- Regele Ferdinand
- Ferdinand of Hohenzollern-Sigmaringen
- Crown Prince Ferdinand
- Crown Prince Ferdinand of Romania
- Ferdinand Hohenzollern
- Ferdinand I, King of Romania
- Ferdinand of Romania
- Ferdinand, Crown Prince of Romania
- Ferdinand, Hereditary Prince of Romania
- Ferdinand, Prince of Hohenzollern-Sigmaringen
- HM King Ferdinand
- Ferdinand (Victor Adalbert Meinard) de Hohenzollern-Sigmaringen
- King Ferdinand I of Romania
- King Ferdinand I of the Romanians
- King Ferdinand of Romania
- Prince Ferdinand of Hohenzollern
- Prince Ferdinand of Hohenzollern-Sigmaringen
- The Crown Prince of Romania
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