Hetman in the context of "Marcello Bacciarelli"

The Pereiaslav Agreement or Pereyaslav Agreement (Ukrainian: Переяславська рада, romanized: Pereiaslavska Rada, lit. 'Pereiaslav Council', Russian: Переяславская рада) was an official meeting that convened for a ceremonial pledge of allegiance by Zaporozhian Cossacks to Russian tsar Alexis (r. 1645–1676) in the town of Pereiaslav in central Ukraine, in January 1654. The ceremony took place concurrently with ongoing negotiations that started on the initiative of Hetman Bohdan Khmelnytsky to address the issue of the Cossack Hetmanate with the ongoing Khmelnytsky Uprising against the Polish–Lithuanian Commonwealth and which concluded the Treaty of Pereiaslav (also known as the March Articles). The treaty itself was finalized in Moscow in April 1654 (in March according to the Julian calendar).

Khmelnytsky secured the military protection of the Tsardom of Russia in exchange for allegiance to the tsar. An oath of allegiance to the Russian monarch from the leadership of the Cossack Hetmanate was taken, shortly thereafter followed by other officials, the clergy and the inhabitants of the Hetmanate swearing allegiance. The exact nature of the relationship stipulated by the agreement between the Hetmanate and Russia is a matter of scholarly controversy. The council of Pereiaslav was followed by an exchange of official documents: the March Articles (from the Cossack Hetmanate) and the tsar's declaration (from Russia).

Jan Sariusz Zamoyski (Latin: Ioannes Zamoyski de Zamoscie; 19 March 1542 – 3 June 1605) was a Polish nobleman, magnate, statesman and the 1st ordynat of Zamość. He served as the Royal Secretary from 1565, Deputy Chancellor from 1576, Grand Chancellor of the Crown from 1578, and Great Hetman of the Crown from 1581.

Zamoyski was the General Starost of the city of Kraków from 1580 to 1585, Starost of Bełz, Międzyrzecz, Krzeszów, Knyszyn and Tartu. An important advisor to Kings Sigismund II Augustus and Stephen Báthory, he was one of the major opponents of Bathory's successor, Sigismund III Vasa, and one of the most skilled diplomats, politicians and statesmen of his time, standing as a major figure in the politics of the Polish–Lithuanian Commonwealth throughout his life.

Jan Amor Tarnowski (Latin: Joannes Tarnovius; 1488 – 16 May 1561) was a Polish nobleman, knight, military commander, military theoretician, and statesman of the Crown of the Kingdom of Poland. He was Grand Crown Hetman from 1527, and was the founder of the city of Tarnopol, where he built the Ternopil Castle and the Ternopil Pond. The first Count of the Holy Roman Empire in the Tarnowski family (1547).

The Metropolis of Kyiv (Greek: Μητρόπολις Κιέβου, romanized: Mitrópolis Kiévou; Ukrainian: Ки́ївська митропо́лія, romanized: Kyivska mytropoliia; Belarusian: Кіеўская мітраполія, Kijeŭskaja mitrapolija) was an autonomous metropolis of the Ecumenical Patriarchate of Constantinople with center in Kyiv after its formation in 988 as a result of the Christianization of Rus by Volodymyr the Great until January 6, 2019, when it received the Tomos on Autocephaly.

In 1596, the Union of Brest was adopted which transferred the ecclesiastical jurisdiction of the metropolis from the Ecumenical Patriarchate to the Holy See. As a sui juris Eastern Catholic particular church, the metropolis retained its ancient rights; in time, it came to be known as the Ruthenian Uniate Church. Some clergy and laity in the Commonwealth continued to give their loyalty to Constantinople but had no hierarchs to support them. In 1620, the Ukrainian Cossacks, led by Hetman Petro Konashevych-Sahaidachny, secured the restoration of the Orthodox hierarchy in the Commonwealth as the Metropolis of Kiev, Galicia and all Rus'.

Ivan Stepanovych Mazepa (Old Ukrainian: Іоан(ъ) / Іван(ъ) Мазепа; Ukrainian: Іван Степанович Мазепа; Polish: Jan Mazepa-Kołodyński; 30 March [O.S. 20 March] 1639 – 2 October [O.S. 21 September] 1709) was the Hetman of the Zaporozhian Host and the Left-bank Ukraine in 1687–1708. The historical events of Mazepa's life have inspired many literary, artistic and musical works. He was famous as a patron of the arts.

Mazepa played an important role in the Battle of Poltava (1709), where after learning that Tsar Peter I intended to relieve him as acting hetman of Zaporozhian Host and to replace him with Alexander Menshikov, he defected from his army and sided with King Charles XII of Sweden. The political consequences and interpretation of this defection have resonated in the national histories both of Russia and of Ukraine.

Prince Karol Stanisław Radziwiłł (Lithuanian: Karolis Stanislovas Radvila II, Exonym: Charles Stanislaus: 27 February 1734 – 21 November 1790) was a Polish–Lithuanian nobleman, diplomat and prince of the Commonwealth. He is frequently referred to by his well-known sobriquet Panie Kochanku ("My Beloved Sir") to distinguish him from his earlier namesake. Prince Radziwiłł held several important posts; from 1752 he was the Master Swordbearer of Lithuania, and in 1757 he became one of the first recipients of the Order of the White Eagle. From 1762 he was Voivode of Vilnius.

Radziwiłł was born on 27 February 1734 to General-Hetman Michał Kazimierz "Rybeńko" Radziwiłł and Princess Urszula Franciszka Wiśniowiecka and spent his childhood in Nieśwież, in the Grand Duchy of Lithuania, then part of the Polish–Lithuanian Commonwealth.

Hetmans of the Polish–Lithuanian Commonwealth (Lithuanian: etmonas) were the highest-ranking military officers, second only to the King, in the Polish–Lithuanian Commonwealth. The first Polish title of Grand Crown Hetman was created in 1505. The title of hetman was given to the leader of the Polish Army and until 1581 it was awarded only for a specific campaign or war. Later it became a permanent title, as did all the titles in the Kingdom of Poland and Polish–Lithuanian Commonwealth. It could not be revoked unless treachery had been proven (from 1585). Hetmans were not paid for their services by the Royal Treasury.