Kniaz’ or knyaz is a word found in some Slavic languages. It is usually translated into English either as Prince or Duke, although the correspondence is not exact.
The title is pronounced and written similarly in different Eastern European languages:
In West Slavic languages, such as Polish and Sorbian, the word has later come to denote "lord", and in Polish also came to mean "priest" (ksiądz) as well as "duke" (książę).
As the degree of centralization grew, the ruler acquired the title Velikii Kniaz (translated as Grand Prince or Grand duke, see Russian Grand Dukes). He ruled a Velikoe Knyazhestvo (Grand Duchy), while a ruler of its vassal constituent (udel, udelnoe kniazhestvo or volost) was called udelny kniaz or simply kniaz.
When Kievan Rus' became fragmented in the 13th century, the title Kniaz continued to be used in Ruthenian states, including Novgorod, Vladimir-Suzdal', Muscovy, Tver, Halych-Volynia, and in the Grand Duchy of Lithuania.
Kniaz continued as a hereditary title of Russian nobility patrilineally descended from Rurik (e.g., Repnin, Gorchakov) or Gediminas (e.g., Galitzine, Troubetzkoy). Members of Rurikid or Gedyminid families were called princes when they ruled tiny quasi-sovereign medieval principalities. After their demesnes were absorbed by Muscovy, they settled at the Moscow court and were authorised to continue with their princely titles.
Since 18th-century, the title was occasionally granted by the Tsar, for the first time by Peter the Great to his associate Alexander Menshikov, and then by Catherine the Great to her lover Grigory Potemkin. After 1801, with the incorporation of Georgia into the Russian Empire, various titles of numerous local nobles were controversially rendered into Russian as "kniazes". Similarly, many petty Tatar nobles asserted their right to style themselves "kniazes" because they descended from Genghis Khan.
Finally, within the Russian Empire of 1809-1917, Finland was called Grand Duchy of Finland (Velikoe Kniazhestvo Finlandskoe).
Belarusian nobility | History of Belarus | History of Ukraine | Russian loanwords | Russian nobility | Slavic culture | Slavic titles
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