Lithuanian Civil War (1381–1384)
Encyclopedia
The Lithuanian Civil War of 1381–1384 was the first struggle for power between the cousins Jogaila
Jogaila
Jogaila, later 'He is known under a number of names: ; ; . See also: Jogaila : names and titles. was Grand Duke of Lithuania , king consort of Kingdom of Poland , and sole King of Poland . He ruled in Lithuania from 1377, at first with his uncle Kęstutis...

, Grand Duke of Lithuania and later King of Poland, and Vytautas the Great
Vytautas the Great
Vytautas ; styled "the Great" from the 15th century onwards; c. 1350 October 27, 1430) was one of the most famous rulers of medieval Lithuania. Vytautas was the ruler of the Grand Duchy of Lithuania which chiefly encompassed the Lithuanians and Ruthenians...

. It began after Jogaila signed the Treaty of Dovydiškės
Treaty of Dovydiškes
The Treaty of Dovydiškės , Daudiske, or Daudisken was a secret treaty signed on May 31, 1380 between Jogaila, the Grand Duke of Lithuania, and Winrich von Kniprode, the Grand Master of the Teutonic Knights...

 with the Teutonic Knights
Teutonic Knights
The Order of Brothers of the German House of Saint Mary in Jerusalem , commonly the Teutonic Order , is a German medieval military order, in modern times a purely religious Catholic order...

 which was aimed against his uncle Kęstutis
Kestutis
Kęstutis was monarch of medieval Lithuania. He was the Duke of Trakai and governed the Grand Duchy of Lithuania, 1342–82, together with his brother Algirdas , and with his nephew Jogaila...

, father of Vytautas. Kęstutis briefly seized power in the Grand Duchy, but was betrayed by adherents of Jogaila primarily from Vilnius
Vilnius
Vilnius is the capital of Lithuania, and its largest city, with a population of 560,190 as of 2010. It is the seat of the Vilnius city municipality and of the Vilnius district municipality. It is also the capital of Vilnius County...

. During negotiations for a truce Kęstutis and Vytautas were arrested and transported to the Kreva Castle
Kreva Castle
Kreva Castle is the ruins of a major fortified residence of Grand Dukes Gediminas and Algirdas in Kreva village, Belarus. Algirdas's brother Kęstutis was imprisoned and murdered in Kreva Castle in 1382. The Act of Krewo, the first step towards the Commonwealth of Poland-Lithuania, was signed in...

. Kęstutis died there a week later but Vytautas managed to escape and then sought an alliance with the Teutonic Knights. Subsequently their joint forces raided Lithuanian lands. Eventually the cousins were reconciled as Jogaila needed internal stability in anticipation of negotiations with the Grand Duchy of Moscow
Grand Duchy of Moscow
The Grand Duchy of Moscow or Grand Principality of Moscow, also known in English simply as Muscovy , was a late medieval Rus' principality centered on Moscow, and the predecessor state of the early modern Tsardom of Russia....

 and the Kingdom of Poland regarding the possible Christianization of Lithuania
Christianization of Lithuania
The Christianization of Lithuania – Christianization of the Grand Duchy of Lithuania that took place in 1387, initiated by the King of Poland and Grand Duke of Lithuania Jogaila and his cousin Vytautas, that signified the official adoption of Christianity by Lithuanians, one of the last pagan...

. The war did not settle the power struggle; it continued during the next Lithuanian Civil War (1389–1392)
Lithuanian Civil War (1389–1392)
The Lithuanian Civil War of 1389–1392 was the second civil conflict between Jogaila, King of Poland and Grand Duke of Lithuania, and his cousin Vytautas the Great. At issue was control of the Grand Duchy of Lithuania, then the largest state in Europe. Jogaila had been crowned King of Poland in...

 which was resolved by the signing of the Ostrów Agreement
Ostrów Agreement
The Ostrów or Astrava Agreement was a treaty between Jogaila , King of Poland and Grand Duke of Lithuania, and his cousin Vytautas the Great, signed on August 4, 1392...

. After more than ten years of struggle, Vytautas finally became the Grand Duke of Lithuania and ruled the country for thirty-eight years.

Background

Brothers Algirdas
Algirdas
Algirdas was a monarch of medieval Lithuania. Algirdas ruled the Grand Duchy of Lithuania from 1345 to 1377, which chiefly meant monarch of Lithuanians and Ruthenians...

 and Kęstutis peacefully co-ruled the Grand Duchy of Lithuania
Grand Duchy of Lithuania
The Grand Duchy of Lithuania was a European state from the 12th /13th century until 1569 and then as a constituent part of Polish-Lithuanian Commonwealth until 1791 when Constitution of May 3, 1791 abolished it in favor of unitary state. It was founded by the Lithuanians, one of the polytheistic...

. Algirdas, who was the Grand Duke, spent most of his time dealing with the eastern provinces of the Grand Duchy, inhabited by Slavic people of Orthodox faith
Eastern Orthodox Church
The Orthodox Church, officially called the Orthodox Catholic Church and commonly referred to as the Eastern Orthodox Church, is the second largest Christian denomination in the world, with an estimated 300 million adherents mainly in the countries of Belarus, Bulgaria, Cyprus, Georgia, Greece,...

. Kęstutis in the name of Algirdas handled most of the affairs in the western part, including defense against the Teutonic Knights. Algirdas died in 1377 and left the throne to Jogaila, his eldest son from the second marriage with Uliana of Tver. Kęstutis and Vytautas continued to collaborate with Jogaila even when his right of inheritance was challenged by Andrei of Polotsk
Andrei of Polotsk
Andrei of Polotsk was the eldest son Algirdas, Grand Duke of Lithuania, and his first wife Maria of Vitebsk. He was Duke of Pskov and Polotsk . As the eldest son of the Grand Duke, Andrei claimed his right to the throne after his father's death in 1377...

, Algirdas' eldest son from his first marriage with Maria of Vitebsk
Maria of Vitebsk
Maria of Vitebsk was the first wife of Algirdas, future Grand Duke of Lithuania . Very little is known about her life. The only child of a Russian prince Yaroslav, Maria was the only heir to the Principality of Vitebsk. After her father's death ca. 1345, Vitebsk fell permanently under control of...

.

The Teutonic Knights continued their crusade against pagan Lithuania. A large campaign was organized in winter of 1378, during which the Teutons reached Brest
Brest, Belarus
Brest , formerly also Brest-on-the-Bug and Brest-Litovsk , is a city in Belarus at the border with Poland opposite the city of Terespol, where the Bug River and Mukhavets rivers meet...

 and as far as the Pripyat River
Pripyat River
The Pripyat River or Prypiat River is a river in Eastern Europe, approximately long. It flows east through Ukraine, Belarus, and Ukraine again, draining into the Dnieper....

. The Livonian Order
Livonian Order
The Livonian Order was an autonomous Livonian branch of the Teutonic Order and a member of the Livonian Confederation from 1435–1561. After being defeated by Samogitians in the 1236 Battle of Schaulen , the remnants of the Livonian Brothers of the Sword were incorporated into the Teutonic Knights...

 raided Upytė
Upyte
Upytė is a small village in Panevėžys district municipality in northern Lithuania. It is situated some 12 km southwest of Panevėžys on the banks of Vešeta Creek. It is now the capital of an elderate. In 1987 it had 580 residents...

, and another campaign threatened the capital in Vilnius
Vilnius
Vilnius is the capital of Lithuania, and its largest city, with a population of 560,190 as of 2010. It is the seat of the Vilnius city municipality and of the Vilnius district municipality. It is also the capital of Vilnius County...

. In summer 1379, Jogaila's brother Skirgaila
Skirgaila
Skirgaila , also known as Ivan; ca. 1353 or 1354 – 11 January 1397 in Kiev; baptized 1383/1384 as Casimir) was a regent of the Grand Duchy of Lithuania for his brother Jogaila from 1386 to 1392. He was son of Algirdas, Grand Duke of Lithuania, and his second wife Uliana of Tver.-Biography:After...

 was sent to the Knights to discuss the situation, possible ways of converting to Christianity, and termination of the Livonian Order's support to Andrei. The details of the trip however remain unknown; rumors had it that he also visited the Holy Roman Emperor
Holy Roman Emperor
The Holy Roman Emperor is a term used by historians to denote a medieval ruler who, as German King, had also received the title of "Emperor of the Romans" from the Pope...

. While the purpose or the outcome of the trip are unclear, it was often cited as the first intrigue behind Kęstutis' back. In the meantime Kęstutis offered to negotiate a truce with the Knights and an exchange of prisoners. On September 29, 1379, a ten-year truce was signed in Trakai
Trakai
Trakai is a historic city and lake resort in Lithuania. It lies 28 km west of Vilnius, the capital of Lithuania. Because of its proximity to Vilnius, Trakai is a popular tourist destination. Trakai is the administrative centre of Trakai district municipality. The town covers 11.52 km2 of...

. It was the last treaty that Kęstutis and Jogaila signed jointly. It was followed by a three-day secret negotiations between Jogaila and the Knights in Vilnius. However, the truce protected only the Christian lands in the south, while Kęstutis' pagan realms in northern and western Lithuania were still vulnerable to Teutonic attacks.

In February 1380, Jogaila, without Kęstutis, made a five-month truce with the Livonian Order to protect his Lithuanian domains and cease Livonian support to Andrei of Polotsk. On May 31, 1380, Jogaila and Grand Master Winrich von Kniprode
Winrich von Kniprode
Winrich von Kniprode was the 22nd Grand Master of the Teutonic Knights. He was the longest serving Grand Master, holding the position for 31 years ....

 signed the secret Treaty of Dovydiškės
Treaty of Dovydiškes
The Treaty of Dovydiškės , Daudiske, or Daudisken was a secret treaty signed on May 31, 1380 between Jogaila, the Grand Duke of Lithuania, and Winrich von Kniprode, the Grand Master of the Teutonic Knights...

. The clauses of the treaty were, overall, convoluted and not entirely clear. Based on the terms of the accord, Jogaila agreed not to intervene during attacks by the Teutonic Knights against Kęstutis or his children. However, if providing aid to Kęstutis were necessary to avoid any suspicions, it would not be a violation of the treaty. The treaty remains controversial as the motives behind it are not entirely clear. Some historians blame Uliana, mother of Jogaila, or his adviser Vaidila
Vaidila
Vaidila was a favorite and brother-in-law of Jogaila, Grand Duke of Lithuania. The Lithuanian Chronicles present Vaidila as a kitchen assistant who rose to the top and entered the nobility only through his marriage to Jogaila's sister Maria in 1379. However, this portrayal is likely biased...

, others point out generational differences: Kęstutis was about 80 years old and determined not to accept Christianity, while Jogaila was about 30 and was looking for ways to convert and modernize the country. Still others have suggested that the treaty was primarily directed against Andrei and his allies – his brother Dmitry of Bryansk and Grand Duke of Moscow Dmitri Donskoi
Dmitri Donskoi
Saint Dmitry Ivanovich Donskoy , or Dmitry of the Don, sometimes referred to as Dmitry I , son of Ivan II the Meek of Moscow , reigned as the Prince of Moscow from 1359 and Grand Prince of Vladimir from 1363 to his death. He was the first prince of Moscow to openly challenge Mongol authority in...

. Jogaila, having secured his western front, allied himself with the Golden Horde
Golden Horde
The Golden Horde was a Mongol and later Turkicized khanate that formed the north-western sector of the Mongol Empire...

 against the Grand Duchy of Moscow
Grand Duchy of Moscow
The Grand Duchy of Moscow or Grand Principality of Moscow, also known in English simply as Muscovy , was a late medieval Rus' principality centered on Moscow, and the predecessor state of the early modern Tsardom of Russia....

 for the upcoming Battle of Kulikovo
Battle of Kulikovo
The Battle of Kulikovo was a battle between Tatar Mamai and Muscovy Dmitriy and portrayed by Russian historiography as a stand-off between Russians and the Golden Horde. However, the political situation at the time was much more complicated and concerned the politics of the Northeastern Rus'...

.

Kęstutis' coup and Jogaila's counter-coup

In early 1381, without violating the Treaty of Dovydiškės, the Teutonic Knights raided the Duchy of Trakai
Duchy of Trakai
Duchy of Trakai was a subdivision of the Grand Duchy of Lithuania during the 14th and early 15th centuries. The Duke of Trakai was an important position held either by the Grand Duke of Lithuania himself or his second-in-command.-History:...

 and Samogitia
Samogitia
Samogitia is one of the five ethnographic regions of Lithuania. It is located in northwestern Lithuania. Its largest city is Šiauliai/Šiaulē. The region has a long and distinct cultural history, reflected in the existence of the Samogitian dialect...

 twice. While raiding towards Trakai, the Teutonic Knights used bombards
Bombard (weapon)
A bombard is a large-caliber, muzzle-loading medieval cannon or mortar, used chiefly in sieges for throwing heavy stone balls. The name bombarde was first noted and sketched in a French historical text around 1380. The modern term bombardment derives from this.Bombards were usually used during...

 for the first time and destroyed Naujapilis, taking some 3,000 prisoners. In August 1381, Kuno von Liebenstein, komtur
Komtur
Komtur was a rank within military orders, especially the Teutonic Knights. In the State of the Teutonic Order, the Komtur was the commander of a basic administrative division called Kommende . A Komtur was responsible for the alimentation of the Knights by the yield from the local estates, he...

 of Osterode
Osterode
The placename Osterode can refer to:* Osterode in Germany* Osterode am Harz in Germany* Ostróda in Poland * a district of the climatic spa Neustadt/Harz, Germany...

 and godfather of Danutė of Lithuania
Danute of Lithuania
Danutė of Lithuania was a Lithuanian princess, daughter of Kęstutis, Grand Duke of Lithuania. She was married to Janusz I of Warsaw, one of the dukes of Masovia. Very little reliable information is known about her life.The date of her marriage is confused in many sources...

, informed Kęstutis about the secret treaty. When Kęstutis asked Vytautas if he knew anything about it, he denied any knowledge and suspected a Teutonic trap. In fall 1381, Kęstutis took advantage of Polotsk's rebellion against Skirgaila
Skirgaila
Skirgaila , also known as Ivan; ca. 1353 or 1354 – 11 January 1397 in Kiev; baptized 1383/1384 as Casimir) was a regent of the Grand Duchy of Lithuania for his brother Jogaila from 1386 to 1392. He was son of Algirdas, Grand Duke of Lithuania, and his second wife Uliana of Tver.-Biography:After...

. Jogaila was away to subdue the rebellion and his absence provided a good opportunity to capture Vilnius
Vilnius
Vilnius is the capital of Lithuania, and its largest city, with a population of 560,190 as of 2010. It is the seat of the Vilnius city municipality and of the Vilnius district municipality. It is also the capital of Vilnius County...

, the capital of the Grand Duchy. Kęstutis became the Grand Duke while Jogaila was taken prisoner on his way back to Vilnius. Vaidila was executed. Jogaila pledged his loyalty to Kęstutis, was released, and received his patrimony, Kreva
Kreva
Kreva is a township in Hrodna Voblast, Belarus.-History:The Kreva Castle, constructed of brick, was built by the Grand Duke Gediminas of Lithuania at the borderland of Lithuanian ethnic lands. After his death in 1341, Kreva became the patrimony of his son and successor, Algirdas...

 and Vitebsk
Vitebsk
Vitebsk, also known as Viciebsk or Vitsyebsk , is a city in Belarus, near the border with Russia. The capital of the Vitebsk Oblast, in 2004 it had 342,381 inhabitants, making it the country's fourth largest city...

. Kęstutis then resumed war with the Teutonic Knights: his army raided Warmia
Warmia
Warmia or Ermland is a region between Pomerelia and Masuria in northeastern Poland. Together with Masuria, it forms the Warmian-Masurian Voivodeship....

 and attempted to capture Georgenburg (Jurbarkas
Jurbarkas
Jurbarkas is a city in Tauragė County, Lithuania. It is on the right-hand shore of the Neman River at its confluence with the tributaries Mituva and Imsre...

).

On June 12, 1382, while Kęstutis was away to fight Dymitr Korybut
Dymitr Korybut
Kaributas was a son of Algirdas, Grand Duke of Lithuania, and reigned in Severian Novgorod until 1393....

 of Novhorod-Siversky, who refused to pay taxes, and Vytautas was away in Trakai, residents of Vilnius, led by the merchant Hanul, let Jogaila's army into the city. The merchants were dissatisfied with Kęstutis' policies as they were hurting the economy, especially trade with Livonia
Livonia
Livonia is a historic region along the eastern shores of the Baltic Sea. It was once the land of the Finnic Livonians inhabiting the principal ancient Livonian County Metsepole with its center at Turaida...

. Vytautas attempted to gather his forces in Trakai and attack Vilnius, but Jogaila recaptured the throne. On July 6, he signed the two-month Truce of Bražuolė with the Teutonic Knights. Vytautas retreated from Trakai
Trakai
Trakai is a historic city and lake resort in Lithuania. It lies 28 km west of Vilnius, the capital of Lithuania. Because of its proximity to Vilnius, Trakai is a popular tourist destination. Trakai is the administrative centre of Trakai district municipality. The town covers 11.52 km2 of...

 in the face of the joint forces of the Teutonic Order and Jogaila, and the city surrendered on July 20. In the meantime Kęstutis rallied his supporters in Samogitia
Samogitia
Samogitia is one of the five ethnographic regions of Lithuania. It is located in northwestern Lithuania. Its largest city is Šiauliai/Šiaulē. The region has a long and distinct cultural history, reflected in the existence of the Samogitian dialect...

, his son Vytautas sought soldiers in Hrodna
Hrodna
Grodno or Hrodna , is a city in Belarus. It is located on the Neman River , close to the borders of Poland and Lithuania . It has 327,540 inhabitants...

, and his brother Liubartas recruited in Galicia–Volhynia. On August 3, 1382, the armies of Kęstutis and Jogaila met near Trakai for a decisive battle, but it never began. According to Teutonic sources, Kęstutis saw that Jogaila, aided by the Teutonic Knights, had superior forces when his Samogitian contingent was reluctant to fight. Both sides agreed to negotiate. Kęstutis and Vytautas arrived in Jogaila's camp, but were arrested and sent to a prison in the Kreva Castle
Kreva Castle
Kreva Castle is the ruins of a major fortified residence of Grand Dukes Gediminas and Algirdas in Kreva village, Belarus. Algirdas's brother Kęstutis was imprisoned and murdered in Kreva Castle in 1382. The Act of Krewo, the first step towards the Commonwealth of Poland-Lithuania, was signed in...

. Their army was disbanded. On August 15, five days after imprisonment, Kęstutis was found dead by Skirgaila. Jogaila claimed that he had hanged himself, but rumors spread that he had been strangled. Jogaila organized a large pagan funeral to Kęstutis: his body was burned along with horses, weapons, and other treasures in Vilnius.

Vytautas' escape

Vytautas remained in prison until fall 1382. He managed to escape with help from his wife Anna, who received permission to visit her husband. According to different sources Vytautas exchanged clothes with either Anna or one of her female servants and sneaked out undetected. First he sought help from his sister Danutė
Danute of Lithuania
Danutė of Lithuania was a Lithuanian princess, daughter of Kęstutis, Grand Duke of Lithuania. She was married to Janusz I of Warsaw, one of the dukes of Masovia. Very little reliable information is known about her life.The date of her marriage is confused in many sources...

 and her husband Janusz I of Warsaw, then he turned to Siemowit IV, Duke of Masovia
Siemowit IV, Duke of Masovia
Siemowit IV was one of the Dukes of Masovia of the old Polish Piast royal family. His domain included the lands of Czersk, Rawa, Sochaczew, Płock and Gostynin. In 1381 he inherited Wisz and in 1387 Bełz.-Life:Siemowit IV was a son of Siemowit III...

. Eventually he came to his enemies, the Teutonic Knights, asking for protection and military aid against Jogaila. According to Wigand of Marburg
Wigand of Marburg
Wigand of Marburg was a German herald of the Teutonic Knights in Prussia and one of the notable chroniclers of the Middle Ages.Wigand expanded upon the earlier work of Nikolaus von Jeroschin...

, Birutė
Birute
Birutė was the second wife of Kęstutis, Grand Duke of Lithuania, and mother of Vytautas the Great. There is very little known about Birutė's life but after her death a strong cult developed among Lithuanians, especially in Samogitia.-Marriage:...

, mother of Vytautas, was drowned in Brest
Brest, Belarus
Brest , formerly also Brest-on-the-Bug and Brest-Litovsk , is a city in Belarus at the border with Poland opposite the city of Terespol, where the Bug River and Mukhavets rivers meet...

, likely in response to his escape. Two of her relatives, Vidimantas and Butrimas, were also murdered.

The Knights received Vytautas without enthusiasm. At the time Jogaila was negotiating with the Teutonic Order. On October 31, 1382, they formulated the Treaty of Dubysa
Treaty of Dubysa
The Treaty of Dubysa or Treaty of Dubissa consisted of three legal acts formulated on October 31, 1382 between Jogaila, Grand Duke of Lithuania, with his brother Skirgaila and Konrad von Wallenrode, Marshal of the Teutonic Knights. During the Lithuanian Civil War , Teutonic Knights helped Jogaila...

 in three separate acts. It was a reward for their help in defeating Andrei and Kęstutis. In it, Jogaila promised to accept Christianity within four years, become an ally of the Order, not to initiate a war without Order's approval, and cede Samogitia, which still supported Vytautas, up to the Dubysa River. However, ratification of the treaty was continuously put off. One of the reasons for the cooling relations was a war in Masovia, that Jogaila had started without consulting the Knights. The Knights also attempted to play Vytautas and Jogaila off against each other. Other historians suggest that Jogaila was already thinking about an alliance with either Moscow or Poland. Eventually, in June 1383, a scheduled meeting between Jogaila and the Grand Master did not take place on a formal pretext and the alliance broke down. The Knights resumed their war with Lithuania.

Reconciliation

In early September, the Knights and Vytautas briefly took control of Trakai and unsuccessfully attacked Vilnius. On October 21, 1383, in Tapiau, in a small ceremony Vytautas was baptized in the Catholic rite, receiving the name of Wigand (Lithuanian: Vygandas) after his godfather Wigand, komtur of Ragnit. Vytautas received New Marienburg, a castle on the Neman River
Neman River
Neman or Niemen or Nemunas, is a major Eastern European river rising in Belarus and flowing through Lithuania before draining into the Curonian Lagoon and then into the Baltic Sea at Klaipėda. It is the northern border between Lithuania and Russia's Kaliningrad Oblast in its lower reaches...

 near the mouth of Dubysa, where he was joined by his relatives and followers, banished from their estates by Jogaila. They included his brother Tautvilas Kęstutaitis. Vytautas also attempted to secure support from the Samogitians. On January 30, 1384, in Königsberg
Königsberg
Königsberg was the capital of East Prussia from the Late Middle Ages until 1945 as well as the northernmost and easternmost German city with 286,666 inhabitants . Due to the multicultural society in and around the city, there are several local names for it...

, Vytautas signed the Treaty of Königsberg
Treaty of Königsberg (1384)
The Treaty of Königsberg was signed in Königsberg on January 30, 1384 during the Lithuanian Civil War between Vytautas the Great and representatives of the Teutonic Knights. Vytautas waged a civil against his cousin Jogaila, Grand Duke of Lithuania and future King of Poland, and allied himself...

 and promised to become the Order's vassal
Vassal
A vassal or feudatory is a person who has entered into a mutual obligation to a lord or monarch in the context of the feudal system in medieval Europe. The obligations often included military support and mutual protection, in exchange for certain privileges, usually including the grant of land held...

 and to cede part of Samogitia to the Teutonic Order, up to the Nevėžis River
Nevežis River
Nevėžis River is the sixth longest river in Lithuania and one of the main tributaries of the Neman River. Its length is , and it flows only within the geographical confines of Lithuania. It is the second longest river in Lithuania, after the Šventoji River, that flows exclusively within its borders...

 and including Kaunas
Kaunas
Kaunas is the second-largest city in Lithuania and has historically been a leading centre of Lithuanian economic, academic, and cultural life. Kaunas was the biggest city and the center of a powiat in Trakai Voivodeship of the Grand Duchy of Lithuania since 1413. During Russian Empire occupation...

. In May 1384, the Knights started constructing a new fortress in Kaunas
Kaunas Castle
Kaunas Castle is located in Kaunas, Lithuania. Archeological evidence suggests that it was originally built during the mid-14th century, in the Gothic style. Its site is strategic – a rise on the banks of the Nemunas River near its confluence with the Neris River...

, called New Marienverder. On June 14, 1384, Vytautas renewed his promises, given in January in Königsberg, in this newly built fortress.

In the meantime Jogaila, probably influenced by his Orthodox mother Uliana of Tver, sought an alliance with the Grand Duchy of Moscow
Grand Duchy of Moscow
The Grand Duchy of Moscow or Grand Principality of Moscow, also known in English simply as Muscovy , was a late medieval Rus' principality centered on Moscow, and the predecessor state of the early modern Tsardom of Russia....

. He was making preparations to marry Sophia, daughter of Dmitri Donskoi
Dmitri Donskoi
Saint Dmitry Ivanovich Donskoy , or Dmitry of the Don, sometimes referred to as Dmitry I , son of Ivan II the Meek of Moscow , reigned as the Prince of Moscow from 1359 and Grand Prince of Vladimir from 1363 to his death. He was the first prince of Moscow to openly challenge Mongol authority in...

, and be baptized in the Orthodox rite. In order to carry out this plan he had to reconcile with Vytautas and end the civil war. In spring 1384, Jogaila offered him Volhynia
Volhynia
Volhynia, Volynia, or Volyn is a historic region in western Ukraine located between the rivers Prypiat and Southern Bug River, to the north of Galicia and Podolia; the region is named for the former city of Volyn or Velyn, said to have been located on the Southern Bug River, whose name may come...

 with Lutsk
Lutsk
Lutsk is a city located by the Styr River in northwestern Ukraine. It is the administrative center of the Volyn Oblast and the administrative center of the surrounding Lutskyi Raion within the oblast...

, but Vytautas refused, demanding to return his entire patrimony, which included Trakai, then governed by Skirgaila. Then Jogaila promised to return Trakai as soon as Skirgaila established himself in Polotsk. In July, Vytautas agreed and decided to abandon the Teutonic Knights. He then proceeded to burn two Teutonic castles on the Neman River
Neman River
Neman or Niemen or Nemunas, is a major Eastern European river rising in Belarus and flowing through Lithuania before draining into the Curonian Lagoon and then into the Baltic Sea at Klaipėda. It is the northern border between Lithuania and Russia's Kaliningrad Oblast in its lower reaches...

 (New Marienburg and Georgenburg). New Marienverder was besieged for six weeks by joint forces of Jogaila and Vytautas before it fell. During these attacks Vytautas captured Marquard von Salzbach
Marquard von Salzbach
Marquard von Salzbach was a Teutonic Knight, who played a prominent role in shaping the relationship between the Knights and the Grand Duchy of Lithuania between 1389 and 1410....

, who later played an important role in Vytautas' relationship with the Knights.

Aftermath

Vytautas returned to Lithuania without a clear written agreement with Jogaila. He received Hrodna
Hrodna
Grodno or Hrodna , is a city in Belarus. It is located on the Neman River , close to the borders of Poland and Lithuania . It has 327,540 inhabitants...

, Brest
Brest, Belarus
Brest , formerly also Brest-on-the-Bug and Brest-Litovsk , is a city in Belarus at the border with Poland opposite the city of Terespol, where the Bug River and Mukhavets rivers meet...

, Podlaskie, Vawkavysk. In order to receive Volhynia
Volhynia
Volhynia, Volynia, or Volyn is a historic region in western Ukraine located between the rivers Prypiat and Southern Bug River, to the north of Galicia and Podolia; the region is named for the former city of Volyn or Velyn, said to have been located on the Southern Bug River, whose name may come...

 after the death of his uncle Liubartas, Vytautas was baptized in the Orthodox rite. Skirgaila continued to rule Trakai. Vytautas pledged loyalty to Jogaila and became one of the many regional dukes. Jogaila was considering different baptism proposals. He had already refused the Treaty of Dubysa
Treaty of Dubysa
The Treaty of Dubysa or Treaty of Dubissa consisted of three legal acts formulated on October 31, 1382 between Jogaila, Grand Duke of Lithuania, with his brother Skirgaila and Konrad von Wallenrode, Marshal of the Teutonic Knights. During the Lithuanian Civil War , Teutonic Knights helped Jogaila...

 with the Teutonic Knights. He negotiated with Moscow, but it was a dangerous ally and Orthodoxy would not save Lithuania from attacks by the Teutonic Knights. Furthermore, Muscovy lost some of its power and influence after the siege of Moscow in 1382
Siege of Moscow (1382)
The Siege of Moscow in 1382 was a battle between Tokhtamysh, khan of the Golden Horde, and the Muscovite forces.-Background:After the death of Berdibeg, the Blue Horde fell into anarchy, with local khans in various places of the Horde's domains. During this time, Mamai Khan emerged as a kingmaker...

 by the Mongols. A third option was presented by Poland: it was looking for a suitable groom for Jadwiga of Poland
Jadwiga of Poland
Jadwiga was monarch of Poland from 1384 to her death. Her official title was 'king' rather than 'queen', reflecting that she was a sovereign in her own right and not merely a royal consort. She was a member of the Capetian House of Anjou, the daughter of King Louis I of Hungary and Elizabeth of...

 and a worthy candidate to become King of Poland. In August 1385, Jogaila signed the Union of Krewo
Union of Krewo
In a strict sense, the Union of Krewo or Act of Krėva was a set of prenuptial promises made in the Kreva Castle on 14 August 1385 by Jogaila, Grand Duke of Lithuania, in exchange for marriage to the underage reigning Queen Jadwiga of Poland...

, promising to Christianize Lithuania
Christianization of Lithuania
The Christianization of Lithuania – Christianization of the Grand Duchy of Lithuania that took place in 1387, initiated by the King of Poland and Grand Duke of Lithuania Jogaila and his cousin Vytautas, that signified the official adoption of Christianity by Lithuanians, one of the last pagan...

, marry Jadwiga, and form a personal union
Personal union
A personal union is the combination by which two or more different states have the same monarch while their boundaries, their laws and their interests remain distinct. It should not be confused with a federation which is internationally considered a single state...

 between Lithuania and Poland. In 1386, he was baptized and crowned King. Skirgaila was left as his regent in Lithuania. Taking advantage of Jogaila's absence, Andrei of Polotsk
Andrei of Polotsk
Andrei of Polotsk was the eldest son Algirdas, Grand Duke of Lithuania, and his first wife Maria of Vitebsk. He was Duke of Pskov and Polotsk . As the eldest son of the Grand Duke, Andrei claimed his right to the throne after his father's death in 1377...

 renewed his bid for the throne of Lithuania. During this time Vytautas remained loyal and helped Jogaila and Skirgaila to defeat Andrei.

On April 28, 1387, after Andrei's defeat, Skirgaila received Polotsk and Trakai – thus breaking the promise given to Vytautas that he would receive Trakai when Skirgaila received Polotsk. Trying to appease his cousin, Jogaila gave him Lutsk (but left a Pole in charge of Lubart's Castle
Lubart's Castle
Lutsk High Castle, also known as Lubart's Castle, began its life in the mid-14th century as the fortified seat of Gediminas' son Liubartas , the last ruler of united Galicia-Volhynia. It is the most prominent landmark of Lutsk, Ukraine and as such appears on the 200 hryvnia bill...

) and Volodymyr-Volynskyi
Volodymyr-Volynskyi
Volodymyr-Volynsky is a city located in Volyn Oblast, in north-western Ukraine. Serving as the administrative centre of the Volodymyr-Volynsky District, the city itself is also designated as a separate raion within the oblast...

. This did not help and the relationship turned sour. At the same time dissatisfaction with Skirgaila's rule continued to grow among the Lithuanians, who resented growing Polish influence in the state. They wanted to maintain Lithuanian legal distinctiveness and reserve offices for the Lithuanians. The duped Teutonic Knights continued to demand Samogitia and continued to wage war. All these circumstances allowed Vytautas to renew his struggle for power. He escaped to the Teutonic Knights for the second time and waged another civil war. It ended with the Ostrów Agreement
Ostrów Agreement
The Ostrów or Astrava Agreement was a treaty between Jogaila , King of Poland and Grand Duke of Lithuania, and his cousin Vytautas the Great, signed on August 4, 1392...

of 1392, wherein Vytautas acknowledged fealty to Jogaila and was granted extensive autonomy in Lithuania. Thus he became the Grand Duke of Lithuania and started his 38-year reign.
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