a state ruled by a prince.
(in traditional Christian angelology) the fifth highest order of the ninefold celestial hierarchy.
27 So Menelaus got the principality: but as for the money that he had promised unto the king, he took no good order for it, albeit Sostratis (the ruler of the castle) required it:
28 For unto him appertained the gathering of the customs. Wherefore they were both called before the king.