Oldenburg
State · 1774–1918 · Capital: Oldenburg
A north German duchy, a grand duchy from 1815 and a member of the German Empire from 1871.
Showing November 11, 1918
« 5 yrs
Office holders on November 11, 1918
Offices
| Office | Holders | Years |
|---|---|---|
| Grand Duke of Oldenburg | 5 | 1774–1918 |