Principality of Wales ended in 1282.
Wales is a principality, not a duchy. Prince Charles is the current Prince of Wales.
It's in Wales. I believe 'South Wales' refers specifically to the southernmost part of the principality.
Andorra, Asturias, Grand prince, Lamballe, Liechtenstein, Monaco, Principality of Sealand, Principality of Wales.
Principality of Halberstadt was created in 1648.
Principality of Beloozero was created in 1238.
Principality of Mindelheim was created in 1467.
Principality of Halych was created in 1124.
Principality of Montenegro was created in 1852.
Principality of Taranto was created in 1088.
Principality of Mingrelia was created in 1557.
Principality of Albania was created in 1914.