The Grand Duchy of Warsaw was established in 1807 as a French client state following Napoleon's victories over Prussia and Russia. It existed until 1815, when it was disbanded after Napoleon's defeat at the Congress of Vienna. The territory was then divided, with much of it incorporated into the Kingdom of Poland under Russian rule, while other parts were assigned to Prussia and Austria. This marked the end of Polish statehood until the establishment of the Second Polish Republic after World War I.
Duchy of Warsaw ended in 1813.
Duchy of Warsaw was created in 1807.
Spain, Switzerland, Grand duchy of Warsaw
Order of Merit of the Grand Duchy of Luxembourg happened on 1961-01-23.
The Grand Duchy of Karameikos was created in 1987.
Grand Duchy of Westarctica was created in 2001.
Grand Duchy of Hesse ended in 1918.
Grand Duchy of Hesse was created in 1806.
Grand Duchy of Würzburg was created in 1805.
Grand Duchy of Würzburg ended in 1814.
Grand Duchy of Posen was created in 1815.
Grand Duchy of Baden ended in 1918.