 No sovereign duchy currently exists, but Luxembourg is a surviving example of a sovereign grand duchy.Historically there have been sovereign principalities with many styles of ruler, such as Countship, Margraviate and even Lordship, especially within the Holy Roman Empire.While the preceding definition would seem to fit a princely state perfectly, the European historical tradition is to reserve that word for native monarchies in colonial countries, and to apply "principality" to the Western monarchies.