Исторические периоды
Duchy of Oldenburg (1806–1806)
1806 CE – 1806 CE
Capital: OldenburgArea: 4,393 km²
Duchy of Oldenburg (1807–1810)
1807 CE – 1810 CE
Capital: OldenburgArea: 4,436 km²
Duchy of Oldenburg (1814–1819)
1814 CE – 1819 CE
Capital: OldenburgArea: 4,436 km²
Duchy of Oldenburg (1820–1833)
1820 CE – 1833 CE
Capital: OldenburgArea: 4,828 km²
Duchy of Oldenburg (1834–1839)
1834 CE – 1839 CE
Capital: OldenburgArea: 4,851 km²
Duchy of Oldenburg (1840–1869)
1840 CE – 1869 CE
Capital: OldenburgArea: 4,807 km²
Duchy of Oldenburg (1870–1870)
1870 CE – 1870 CE
Capital: OldenburgArea: 4,807 km²