Duke
Duke is a male title either of a monarch ruling over a duchy, or of a member of royalty, or nobility. As rulers, dukes are ranked below emperors, kings, grand princes, grand dukes, and sovereign princes. As royalty or nobility, they are ranked below princes and grand dukes. The title comes from French duc, itself from the Latin dux, 'leader', a term used in republican Rome to refer to a military commander without an official rank (particularly one of Germanic or Celtic origin), and later coming to mean the leading military commander of a province. In most countries, the word duchess is the female equivalent.
"Duchess" redirects here. For other uses, see Duchess (disambiguation), Duke (disambiguation), and Dukes (disambiguation).
Following the reforms of the emperor Diocletian (which separated the civilian and military administrations of the Roman provinces), a dux became the military commander in each province. The title dux, Hellenised to doux, survived in the Eastern Roman Empire where it continued in several contexts, signifying a rank equivalent to a captain or general. Later on, in the 11th century, the title Megas Doux was introduced for the post of commander-in-chief of the entire navy.
During the Middle Ages the title (as Herzog) signified first among the Germanic monarchies. Dukes were the rulers of the provinces and the superiors of the counts in the cities and later, in the feudal monarchies, the highest-ranking peers of the king. A duke may or may not be, ipso facto, a member of the nation's peerage: in the United Kingdom and Spain all dukes are/were also peers of the realm, in France some were and some were not, while the term is not applicable to dukedoms of other nations, even where an institution similar to the peerage (e.g. Grandeeship, Imperial Diet, Hungarian House of Magnates) existed.
During the 19th century, many of the smaller German and Italian states were ruled by dukes or grand dukes. But at present, with the exception of the Grand Duchy of Luxembourg, there are no dukes ruling as monarchs. Duke remains the highest hereditary title (aside from titles borne by a reigning or formerly reigning dynasty) in Portugal (though now a republic), Spain, and the United Kingdom. In Sweden, members of the royal family are given a personal dukedom at birth. The Pope, as a temporal sovereign, has also, though rarely, granted the title of duke or duchess to persons for services to the Holy See. In some realms the relative status of "duke" and "prince", as titles borne by the nobility rather than by members of reigning dynasties, varied—e.g., in Italy and Germany.
A woman who holds in her own right the title to such duchy or dukedom, or is married to a duke, is normally styled duchess. Queen Elizabeth II, however, was known by tradition as Duke of Normandy in the Channel Islands and Duke of Lancaster in Lancashire.
The highest precedence in the realm, attached to a feudal territory, was given to the twelve original pairies (en: peers), who also had a traditional function in the royal coronation, comparable to the German imperial archoffices. Half of them were ducal: three ecclesiastical (the six prelates all ranked above the six secular peers of the realm) and three temporal, each time above three counts of the same social estate:
The Prince-Bishops with ducal territories among them were:
Later, the Archbishop of Paris was given the title of duc de Saint-Cloud with the dignity of peerage, but it was debated if he was an ecclesiastical peer or merely a bishop holding a lay peerage.
The secular dukes in the peerage of the realm were, again in order of precedence:
The theory of the participation of the peers in the coronation was laid down in the late 13th century, when some of the peerage (the Duchy of Normandy and the County of Toulouse) had already been merged in the crown.
At the end of this same century, the king elevated some counties into duchies, a practice that increased up until the Revolution. Many of these duchies were also peerages (the so-called 'new peerages').
Post-colonial non-European states[edit]
Empire of Brazil[edit]
In the Empire of Brazil duke was the highest rank for people born outside the imperial house and only three dukedoms were created. Two of these titles were for relatives of Emperor Pedro I: an illegitimate daughter and a brother-in-law who received the title when married to Pedro I's daughter Maria II. The third, given to Luís Alves de Lima e Silva, was the only dukedom created during the reign of Pedro II. None of these titles were hereditary, just like every other title in the Brazilian nobility system.
Haiti[edit]
The royal Christophe dynasty created eight hereditary dukedoms, in rank directly below the nominal princes. They were short-lived and only recognized in the country.
