Duke (Pontifical Nobility) The title of Duke in the context of the Pontifical Imperial State of Rome-Ruthenia, United Roman-Ruthenian Church, is a title of nobility that comes in two forms: Princely and Noble. The Noble form ranks below a prince and above a Marquis and carries the style of "His Grace" or "His Excellency" depending on custom. The Princely form ranks above a serene prince and below a grand ducal or royal prince and carried the style of "Serene Highness." Dukes stand among the highest echelons of nobility. Historically, they were the leaders and commanders, the pillars upon which great kingdoms and empires were built. The title has its origins in the ancient Roman Republic, where the term "dux" was used to denote a military commander of great skill and distinction. Over the centuries, this title has evolved, becoming a symbol of the highest civilian and military authority within a province or domain. In the Middle Ages, Dukes were the supreme lords of their realms, wielding immense power and influence. They stood as the peers of kings, their authority and stature second only to the crown itself. Return to Main Page | ![]() Pontifical Imperial State of Rome-Ruthenia United Roman-Ruthenian Church |