Duchy of Warsaw ended in 1813.
Duchy of Warsaw was created in 1807.
Duchy of Warsaw.
The Congress gave the Duchy of Warsaw and Finland to Russia.
Duchy of Bytom ended in 1498.
Duchy of Burgundy ended in 1477.
Duchy of Carinthia ended in 1919.
Duchy of Carniola ended in 1918.
Duchy of Florence ended in 1569.
Duchy of Friuli ended in 828.
Duchy of Brzeg ended in 1675.
Duchy of Belz ended in 1462.
Duchy of Teschen ended in 1918.