Prince

A prince is a male ruler (ranked below a king, grand prince, and grand duke) or a male member of a monarch's or former monarch's family. Prince is also a title of nobility (often highest), often hereditary, in some European states. The female equivalent is a princess. The English word derives, via the French word prince, from the Latin noun prīnceps, from primus (first) and caput (head), meaning "the first, foremost, the chief, most distinguished, noble ruler, prince".

In a related sense, now not commonly used, all more or less sovereign rulers over a state, including kings, were "princes" in the language of international politics. They normally had another title, for example king or duke. Many of these were Princes of the Holy Roman Empire.

The Latin word prīnceps (older Latin *prīsmo-kaps, lit. 'the one who takes the first [place/position]'), became the usual title of the informal leader of the Roman senate some centuries before the transition to empire, the princeps senatus.

Emperor Augustus established the formal position of monarch on the basis of principate, not dominion. He also tasked his grandsons as summer rulers of the city when most of the government were on holiday in the country or attending religious rituals, and, for that task, granted them the title of princeps.

The title has generic and substantive meanings:

The original but now less common use of the word was the application of the Latin word prīnceps, from late Roman law and the classical system of government that eventually gave way to the European feudal society. In this sense, a prince is a ruler of a territory that is sovereign or quasi-sovereign, i.e., exercising substantial (though not all) prerogatives associated with monarchs of independent nations, such as the immediate states within the historical boundaries of the Holy Roman Empire. In medieval and early modern Europe, there were as many as two hundred such territories, especially in Italy, Germany, and Gaelic Ireland. In this sense, "prince" is used of any and all rulers, regardless of actual title or precise rank. This is the Renaissance use of the term found in Niccolò Machiavelli's famous work, Il Principe. It is also used in this sense in the United States Declaration of Independence.

As a title, by the end of the medieval era, prince was borne by rulers of territories that were either substantially smaller than those of or exercised fewer of the rights of sovereignty than did emperors and kings. A lord of even a quite small territory might come to be referred to as a prince before the 13th century, either from translations of a native title into the Latin prīnceps (as for the hereditary ruler of Wales) or when the lord's territory was allodial. The lord of an allodium owned his lands and exercised prerogatives over the subjects in his territory absolutely, owing no feudal homage or duty as a vassal to a liege lord, nor being subject to any higher jurisdiction. Most small territories designated as principalities during feudal eras were allodial, e.g. the Princedom of Dombes.

Lords who exercised lawful authority over territories and people within a feudal hierarchy were also sometimes regarded as princes in the general sense, especially if they held the rank of count or higher. This is attested in some surviving styles for e.g., British earls, marquesses, and dukes are still addressed by the Crown on ceremonial occasions as high and noble princes (cf. Royal and noble styles).