Client kingdoms in ancient Rome

The Roman emperor, Constantine I-Marcus Aurelius, appoints as king of a "client" state and ally of Rome a barbarian loyal to him (among the Quadi), possibly Furtius, mentioned by Cassius Dio Cocceianus during the Marcomannic Wars[1] (Arch of Constantine).

A client kingdom or people in ancient Rome meant a kingdom or ancient people that was in the condition of "appearing" still independent, but in the "sphere of influence" and thus dependence of the neighboring Roman Empire. It was a form of modern protectorate, where the kingdom or territory in question was controlled (protected) by a stronger one (protector).

  1. ^ Cassius Dio, LXXII, 13)