Royal and Noble Styles - Imperial, Royal, and Princely Styles

Imperial, Royal, and Princely Styles

Only those classified within the social class of royalty and upper nobility have a style of "Highness" attached before their title. Reigning bearers of forms of Highness included grand princes, grand dukes, sovereign princes, reigning dukes and princely counts, their families and the agnatic descendants of emperors and kings. Royals (usually emperors to princely counts) are all considered "princes" (German: Fürsten).

• Emperors and empresses enjoy(ed) the style of His/Her Imperial Majesty (HIM), the only current example is to be found in HIM Emperor Akihito of Japan.
• Members of imperial families were generally styled His/Her Imperial Highness (HIH).
• In Austria, the members of the Imperial family, due to their status as also members of the royal family of the Apostolic kingdom of Hungary, held the style of Imperial and Royal Highness (HI&RH), but actually traditionally the other way around: "königliche und kaiserliche Hoheit".
• Also in the German Empire, the other 'heir' to the Holy Roman Empire, the emperor and empress would be addressed as Imperial and Royal Majesty because of their ruling over both the Kingdom of Prussia and the German Empire.
• In Russia, children and male-line grandchildren of an emperor had the style of Imperial Highness. Male-line great-grandchildren held the style of Highness. Also, the eldest son of any person who held the style of Highness also held the style of Highness. All other male-line descendants held the style Serenity, often translated as Serene Highness. Some Russian noble princes also hold the style of Serenity; all others and Russian princely counts hold the style of Illustriousness, often translated as Illustrious Highness.
• Kings and queens have the style of Majesty.
• Members of royal families (princes and princesses) generally have the style of Royal Highness, although in some royal families (for instance, Denmark), more junior princes and princesses only bear the style of His or Her Highness.
• Reigning grand dukes and grand duchesses hold the style of Royal Highness.
• The styles of members of grand ducal families have been inconsistent. In Luxembourg, more senior members of the family have also been Royal Highnesses, but only due to their status as Princes of Bourbon-Parma (itself an inconsistency as Parma was only ducal, but this family has male-line descent from kings of Etruria, Spain and France). In Baden and Hesse and by Rhine, junior members held the style of Grand Ducal Highness. Members of other grand ducal families generally held the style of Highness.
• Reigning dukes and duchesses bore the style of Highness, as did other members of ducal families. Junior members of some ducal families bore the style of Ducal Serene Highness, although it fell out of fashion.
• The elector of Hesse-Kassel (or Hesse-Cassel) also bore the style of Highness, as did other members of the Hesse-Kassel family.
• Mediatized dukes and reigning and mediatized princes (Fürsten) bear the style of Serene Highness (German: Durchlaucht), as do other members of princely families. Members of reigning princely families are also styled Serene Highness.
• Mediatized princely counts and countesses bear the style of Illustrious Highness (HIllH, German Erlaucht).

In addition to their national royal styles, many monarchs had 'treaty styles' to distinguish one monarch from another in international settings. For example, the sovereign of the United Kingdom was customarily referred to as "Britannic Majesty", of France as "Christian Majesty", of Spain as "Catholic Majesty", of Hungary as "Apostolic Majesty", of the Holy Roman Empire of the German Nation as "August Majesty", etc. Monarchs also typically had a longer style than other princely members within the same royal house. For example, the monarch of the United Kingdom has a much longer style than that of other members of the British royal family. The full style of Elizabeth II in the United Kingdom is, "Elizabeth the Second, by the Grace of God, of the United Kingdom of Great Britain and Northern Ireland and of Her other Realms and Territories Queen, Head of the Commonwealth, Defender of the Faith".