Treaty Of Dovydiškės
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The Treaty of Dovydiškės (; ), Daudiske, or Daudisken was a
secret treaty A secret treaty is a treaty (international agreement) in which the contracting state parties have agreed to conceal the treaty's existence or substance from other states and the public.Helmut Tichy and Philip Bittner, "Article 80" in Olivier D ...
signed on 31 May 1380 between Jogaila, the
Grand Duke of Lithuania This is a list of Lithuanian monarchs who ruled Lithuania from its inception until the fall of the Grand Duchy of Lithuania in 1795. The Lithuanian monarch bore the title of Grand duke, Grand Duke, with the exception of Mindaugas, who was crown ...
, and Winrich von Kniprode, the Grand Master of the
Teutonic Knights The Teutonic Order is a Catholic religious institution founded as a military society in Acre, Kingdom of Jerusalem. The Order of Brothers of the German House of Saint Mary in Jerusalem was formed to aid Christians on their pilgrimages to t ...
. The treaty was directed against Jogaila's uncle
Kęstutis Kęstutis ( – 3 or 15 August 1382) was sole Duke of Trakai from 1342 to 1382 and List of Lithuanian monarchs, Grand Duke of Lithuania from 1342 to 1382, together with his brother Algirdas (until 1377), and with his nephew Jogaila (from 1377 to ...
and its effect was to precipitate the
Lithuanian Civil War (1381–1384) The Lithuanian Civil War of 1381–1384 was the first struggle for power between the cousins Jogaila, Grand Duke of Lithuania and later King of Poland, and Vytautas the Great. It began after Jogaila signed the Treaty of Dovydiškės with the Teut ...
.


Background

The treaty was signed soon after Grand Duke
Algirdas Algirdas (; , ;  – May 1377) was List of Lithuanian monarchs, Grand Duke of Lithuania from 1345 to 1377. With the help of his brother Kęstutis (who defended the western border of the Duchy) he created an empire stretching from the pre ...
' death in 1377. Algirdas named his son Jogaila as his successor and not Kęstutis, his brother and co-ruler. Kęstutis and his son
Vytautas Vytautas the Great (; 27 October 1430) was a ruler of the Grand Duchy of Lithuania. He was also the prince of Grodno (1370–1382), prince of Lutsk (1387–1389), and the postulated king of the Hussites. In modern Lithuania, Vytautas is revere ...
acknowledged Jogaila's title and maintained friendly relations with him even when his right of inheritance was challenged by Andrei of Polotsk, Algirdas' eldest son. The Teutonic Knights continued their crusade against pagan Lithuania. A large campaign was organized in winter of 1378. Teutons reached Brest and as far as the
Pripyat River The Pripyat or Prypiat is a river in Eastern Europe. The river, which is approximately long, flows east through Ukraine, Belarus, and into Ukraine again, before draining into the Dnieper at Kyiv Reservoir. Name etymology Max Vasmer notes in h ...
. The Livonian Order raided Upytė. Another campaign threatened the capital in
Vilnius Vilnius ( , ) is the capital of and List of cities in Lithuania#Cities, largest city in Lithuania and the List of cities in the Baltic states by population, most-populous city in the Baltic states. The city's estimated January 2025 population w ...
. Kęstutis offered to negotiate a truce and exchange of prisoners. On 29 September 1379 a ten-year truce was signed in
Trakai Trakai (; see Trakai#Names and etymology, names section for alternative and historic names) is a city and lake resort in Lithuania. It lies west of Vilnius, the capital of Lithuania or just from the administrative limits of the Lithuanian capi ...
. It was the last treaty that Kęstutis and Jogaila signed jointly. However, the truce protected only Christian lands in the south, thus 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 The Livonian Order was an autonomous branch of the Teutonic Order, formed in 1237. From 1435 to 1561 it was a member of the Livonian Confederation. History The order was formed from the remnants of the Livonian Brothers of the Sword after thei ...
to protect his Lithuanian domains and
Polotsk Polotsk () or Polatsk () is a town in Vitebsk Region, Belarus. It is situated on the Dvina River and serves as the administrative center of Polotsk District. Polotsk is served by Polotsk Airport and Borovitsy air base. As of 2025, it has a pop ...
, just taken from his rival Andrei of Polotsk.


Provisions

To cover up the signing of the treaty, the Teutonic Knights organized a five-day hunt in May 1380. The Lithuanian side was represented by Jogaila and his adviser Vaidila, Vytautas and his adviser
Ivan Olshanski Ivan Olshanski or Olshansky (died in or after 1402) was a member of the Lithuanian princely Alšėniškiai (Holshansky) family. Historians only know his father's name, Algimantas. Ivan was a faithful companion of Vytautas the Great, Grand Duke o ...
. Vytautas' presence further complicated explanations of the treaty and it is unclear if he knew about the negotiations. The Teutons sent grosskomtur Rüdiger von Elner,
komtur Commander (; ; ; ; ), or Knight Commander, is a title of honor prevalent in chivalric orders and fraternal orders. The title of Commander occurred in the medieval military orders, such as the Knights Hospitaller, for a member senior to a Knight. ...
of Elbing Ulrich von Fricke, and
vogt An , sometimes simply advocate, (German, ), or (French, ), was a type of medieval office holder, particularly important in the Holy Roman Empire, who was delegated some of the powers and functions of a major feudal lord, or for an institutio ...
of
Dirschau Tczew (, formerly ) is a city on the Vistula River in the Pomeranian Voivodeship, in northern Poland, with 59,111 inhabitants (December 2021). It is the capital of Tczew County and the largest city of the ethnocultural region of Kociewie within th ...
Albrecht von Luchtenberg. The place where the treaty was signed is not known. The name of Dovydiškės is found only in the chronicles of Wigand of Marburg as ''Dowidisken''. The treaty itself mentions ''Daudiske'';
German language German (, ) is a West Germanic language in the Indo-European language family, mainly spoken in Western Europe, Western and Central Europe. It is the majority and Official language, official (or co-official) language in Germany, Austria, Switze ...
texts have used ''Daudiske'' or ''Daudisken''. However, no such place is known either in
Lithuania Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea, bordered by Latvia to the north, Belarus to the east and south, P ...
or
Prussia Prussia (; ; Old Prussian: ''Prūsija'') was a Germans, German state centred on the North European Plain that originated from the 1525 secularization of the Prussia (region), Prussian part of the State of the Teutonic Order. For centuries, ...
. Some theories claim that the treaty was signed somewhere between
Kaunas Kaunas (; ) is the second-largest city in Lithuania after Vilnius, the fourth largest List of cities in the Baltic states by population, city in the Baltic States and an important centre of Lithuanian economic, academic, and cultural life. Kaun ...
and
Insterburg Chernyakhovsk (; German language, German: Insterburg) is a types of inhabited localities in Russia, town in Kaliningrad Oblast, Russia, and the administrative center of Chernyakhovsky District. Located at the confluence of the Instruch and Angrap ...
or that the village was named ''Šiaudiniškė'' (''Szaudiniszki''). The clauses of the treaty were, overall, convoluted and not entirely clear. Jogaila and the Knights agreed not to attack each other. 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 it was necessary to help to avoid any suspicions, it would not be a violation of the treaty. Historians noted that the treaty was somewhat superfluous as Jogaila's lands were protected by the ten-year Truce of Trakai, signed in 1379. The primary purpose of the treaty was to guarantee the neutrality of the Teutonic Knights in the power struggle between Jogaila and his brothers, Dukes Andrei of Polotsk and Dmitry of Bryansk, and their ally
Dmitri Donskoi Dmitry Ivanovich Donskoy (; 12 October 1350 – 19 May 1389) was Prince of Moscow from 1359 and Grand Prince of Vladimir from 1363 until his death. He was the heir of Ivan II. He was the first prince of Moscow to openly challenge Mongol a ...
, Grand Duke of Moscow. Jogaila, having secured his western front, directed his attention to the east, where he allied himself with the
Golden Horde The Golden Horde, self-designated as ''Ulug Ulus'' ( in Turkic) was originally a Mongols, Mongol and later Turkicized khanate established in the 13th century and originating as the northwestern sector of the Mongol Empire. With the division of ...
for the upcoming
Battle of Kulikovo The Battle of Kulikovo () was fought between the forces of Mamai, a powerful Mongol military commander of the Golden Horde, and Russian forces led by Grand Prince Dmitry Donskoy, Dmitry of Moscow. The battle took place on 8 September 1380, at Ku ...
against the
Grand Duchy of Moscow The Grand Principality of Moscow, or Muscovy, known as the Principality of Moscow until 1389, was a late medieval Russian monarchy. Its capital was the city of Moscow. Originally established as a minor principality in the 13th century, the gra ...
. Some historians blamed
Uliana of Tver Uliana Aleksandrovna ( – 17 March 1391) was a grand duchess of Lithuania as the second wife of Algirdas. She was the daughter of Alexander of Tver and Anastasia of Galicia, daughter of Yuri I of Galicia. Life After her father and eldes ...
, mother of Jogaila, or his adviser Vaidila, others pointed out generational differences: Kęstutis was about 80 years old and determined not to accept Christianity while Jogaila was about 30 years old and was looking for ways to convert and modernize the country.


Aftermath

In 1381, without violating the treaty, the Teutonic Knights raided
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 After ...
and
Samogitia Samogitia, often known by its Lithuanian language, Lithuanian name ''Žemaitija'' (Samogitian language, Samogitian: ''Žemaitėjė''; see Samogitia#Etymology and alternative names, below for alternative and historical names) is one of the five ...
, lands of Kęstutis. While raiding towards Trakai, the Teutonic Knights used bombards for the first time and destroyed Naujapilis taking some 3,000 prisoners. Subsequently the Teutonic Knights informed Kęstutis about Jogaila's secret pact. Kęstutis hesitated and asked his son Vytautas for advice. Vytautas replied that no such treaty was made. At the end of 1381, Kęstutis decided to fight against Jogaila. He seized
Vilnius Vilnius ( , ) is the capital of and List of cities in Lithuania#Cities, largest city in Lithuania and the List of cities in the Baltic states by population, most-populous city in the Baltic states. The city's estimated January 2025 population w ...
and declared himself Grand Duke. An internal war erupted which ended in Kęstutis' death in the Kreva Castle and Vytautas' reconciliation with Jogaila in 1384.


References

{{DEFAULTSORT:Treaty of Dovydiskes Dovydiskes 1380 in Europe 14th century in Lithuania Dovydiskes Dovydiskes 14th century in the State of the Teutonic Order Secret treaties