#Auguste de Beauharnais (1810–1835), 2nd Duke of Leuchtenberg since 1824, son of the former.
Principality of Bulgaria | Eichstätt | Principality of Ansbach | Principality of Lüneburg | Principality of Auersperg | Principality of Polotsk | Principality of Orange | Principality of Yaroslavl | Principality of Pereyaslavl | Principality of Calenberg | Principality of Lippe | Principality of Grubenhagen | Principality of Sealand | Principality of Piombino | Principality of Kiev | Principality of Catalonia | Principality of Anhalt-Zerbst | Principality of Zeta | Principality of Transylvania | Principality of Lichtenberg | Principality of Hungary | Principality of Halberstadt | Principality of Brunswick-Wolfenbüttel | Tabasaran Principality | Serbian Grand Principality | Principality of Valona | Principality of Ryazan | Principality of Reuss-Greiz | Principality of Reuss | Principality of Nassau-Orange-Fulda |
The title came with the effective administration of the Principality of Eichstätt.