Principality of Achaea was created in 1205.
Principality of Achaea ended in 1432.
Achaea was created in 2011.
Achaea janata was created in 1758.
Achaea echo was created in 1858.
Achaea - Roman province - was created in 146.
Principality of Salerno was created in 851.
Principality of Göttingen was created in 1279.
Principality of Rügen was created in 1168.
Principality of Ryazan was created in 1129.
Principality of Bulgaria was created in 1878.
Principality of Orange was created in 1163.
Principality of Galilee was created in 1099.