Principality of the Pindus was created in 1941.
Principality of the Pindus ended in 1944.
Pindus National Park was created in 1966.
Principality of Regensburg was created in 1803.
Principality of Orange was created in 1163.
Principality of Göttingen was created in 1279.
Principality of Serbia was created in 1817.
Principality of Beloozero was created in 1238.
Principality of Halberstadt was created in 1648.
Principality of Halych was created in 1124.
Principality of Montenegro was created in 1852.
Principality of Rügen was created in 1168.
Principality of Bulgaria was created in 1878.