Grand Duchy of Baden was created in 1806.
Grand Duchy of Baden State Railway was created in 1840.
Grand Duchy of Baden ended in 1918.
Grand Duchy of Baden State Railway ended in 1920.
The Grand Duchy of Karameikos was created in 1987.
Grand Duchy of Berg was created in 1807.
Grand Duchy of Westarctica was created in 2001.
Grand Duchy of Hesse was created in 1806.
Grand Duchy of Tuscany was created in 1569.
Grand Duchy of Moscow was created in 1263.
Grand Duchy of Posen was created in 1815.
Grand Duchy of Würzburg was created in 1805.
Grand Duchy of the Lower Rhine was created in 1815.