Oster ( uk, Осте́р ; russian: Остёр, Ostyor) is a

city A city is a human settlement of notable size.Goodall, B. (1987) ''The Penguin Dictionary of Human Geography''. London: Penguin.Kuper, A. and Kuper, J., eds (1996) ''The Social Science Encyclopedia''. 2nd edition. London: Routledge. It can be def ...

located where the

Oster River The Oster () is a river in the northern Ukrainian oblast of Chernihiv. The river is a left tributary of the Desna River. It is approximately 199 km long and its basin area is 2,950 km2. It is connected by canals and streams with the Tru ...

flows into the Desna, in

Chernihiv Raion Chernihiv Raion ( uk, Чернігівський район) is a raion (district) of Chernihiv Oblast, northern Ukraine. Its administrative centre is the city of Chernihiv. Population: On 18 July 2020, as part of the administrative reform of ...

, Chernihiv Oblast of

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...

. Oster hosts the administration of

Oster urban hromada Oster ( uk, Осте́р ; russian: Остёр, Ostyor) is a city located where the Oster River flows into the Desna, in Chernihiv Raion, Chernihiv Oblast of Ukraine. Oster hosts the administration of Oster urban hromada, one of the hromadas o ...

, one of the hromadas of Ukraine. Its population is Today Oster is a river port with a cotton-textile factory and a food industry. Some parts of the old fortress in Oster have been preserved, as have the remains of the Saint Michael's Church, constructed in 1098 and the only preserved church of the medieval principality of

Pereyaslav Pereiaslav ( uk, Перея́слав, translit=Pereiaslav, yi, פּרעיאַסלעוו, Periyoslov) is a historical city in the Boryspil Raion, Kyiv Oblast (province) of central Ukraine, located near the confluence of Alta and Trubizh rivers ...

History

Oster was founded in 1098 by

Vladimir Monomakh Vladimir II Monomakh (Old East Slavic: Володимѣръ Мономахъ, ''Volodiměrŭ Monomakhŭ''; uk, Володимир Мономах, translit=Volodymyr Monomakh; russian: Владимир Мономах; Christian name: ''Vasiliy'' ...

as Gorodets, a fortress belonging to Pereiaslav principality, which was later inherited by his son

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. T ...

Yuri Dolgoruki Yuri I Vladimirovich ( rus, Юрий Владимирович, Yuriy Vladimirovich), commonly known as Yuri Dolgorukiy or the Long Arm ( rus, Юрий Долгорукий, Yuriy Dolgorukiy, meaning "Far-Reaching", c. 109915 May 1157) was a Rur ...

. In 1240, it was destroyed by the

Mongol invasion The Mongol invasions and conquests took place during the 13th and 14th centuries, creating history's largest contiguous empire: the Mongol Empire (1206- 1368), which by 1300 covered large parts of Eurasia. Historians regard the Mongol devastati ...

, after which it remained in ruins for a century. After the destruction of the fort, a village arose in its place, named Stary Oster or Starogorodkaya. In the beginning of the 14th century a newer settlement arose closer to the Desna, named Oster. From 1356 Oster was under control of the

Grand Duchy of Lithuania The Grand Duchy of Lithuania was a European state that existed from the 13th century to 1795, when the territory was partitioned among the Russian Empire, the Kingdom of Prussia, and the Habsburg Empire of Austria. The state was founded by Lit ...

, and from 1569, under the

Union of Lublin The Union of Lublin ( pl, Unia lubelska; lt, Liublino unija) was signed on 1 July 1569 in Lublin, Poland, and created a single state, the Polish–Lithuanian Commonwealth, one of the largest countries in Europe at the time. It replaced the per ...

, it was part of the

Polish–Lithuanian Commonwealth The Polish–Lithuanian Commonwealth, formally known as the Kingdom of Poland and the Grand Duchy of Lithuania, and, after 1791, as the Commonwealth of Poland, was a bi- confederal state, sometimes called a federation, of Poland and Lithuania ru ...

. In 1648 it became part of an

uyezd An uezd (also spelled uyezd; rus, уе́зд, p=ʊˈjest), or povit in a Ukrainian context ( uk, повіт), or Kreis in Baltic-German context, was a type of administrative subdivision of the Grand Duchy of Moscow, the Russian Empire, and the ea ...

(county) of the

Pereiaslav Pereiaslav ( uk, Перея́слав, translit=Pereiaslav, yi, פּרעיאַסלעוו, Periyoslov) is a historical city in the Boryspil Raion, Kyiv Oblast (province) of central Ukraine, located near the confluence of Alta and Trubizh riv ...

regiment. From 1654, Oster was under control of the

Russian Empire The Russian Empire was an empire and the final period of the Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended the Great Northern War. ...

. In 1622,

King King is the title given to a male monarch in a variety of contexts. The female equivalent is queen, which title is also given to the consort of a king. *In the context of prehistory, antiquity and contemporary indigenous peoples, the tit ...

Jan II Casimir John II Casimir ( pl, Jan II Kazimierz Waza; lt, Jonas Kazimieras Vaza; 22 March 1609 – 16 December 1672) was King of Poland and Grand Duke of Lithuania from 1648 until his abdication in 1668 as well as titular King of Sweden from 1648 ...

granted Oster the

Magdeburg rights Magdeburg rights (german: Magdeburger Recht; also called Magdeburg Law) were a set of town privileges first developed by Otto I, Holy Roman Emperor (936–973) and based on the Flemish Law, which regulated the degree of internal autonomy within ...

and a coat of arms. After harsh battles of the Ukrainian War for Independence, Polish rule was again established in Oster, but in February 1664, with support from the local population, the Poles were driven back by Cossacks and the Russians. In 1803, the city became an uyezd center of Chernigov Gubernia. Until 18 July 2020, Oster belonged to Kozelets Raion. The raion was abolished in July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Chernihiv Oblast to five. The area of Kozelets Raion was merged into Chernihiv Raion.

References

{{Authority control Cities in Chernihiv Oblast Ostyorsky Uyezd Cossack Hetmanate Kiev Voivodeship Cities of district significance in Ukraine Populated places on the Desna in Ukraine