The Treaty of Königsberg was signed 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...

 on May 26, 1390 during the 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...

 between 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...

n nobles and representatives of 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...

. The 31-member or 30-member delegation from seven Samogitian regions (Ariogala

Ariogala

Ariogala is a city in central Lithuania. It is located on the Dubysa River, which flows through the city.-Name:Ariogala is the Lithuanian name of the city. Versions of the name in other languages include Polish: Ejragoła, Russian: Эйрагола Eiragola, Belarusian: Эйрагола Eirahola, Yiddish:...

, Kaltinėnai

Kaltinenai

Kaltinėnai is a little town on the west side of Lithuania, near Žemaičių highroad, Šilalė district municipality.In Kaltinėnai live about 1000 inhabitants. The town is in a hollow. People say that in the end of Ice age here was a big lake. There are many breathtaking views around Kaltinėnai...

, Knituva, Kražiai

Kražiai

Kražiai is a town in Lithuania, located in the Kelmė district municipality, between Varniai and Raseiniai , on the Kražantė river. The old town of Kražiai is an archeological and urban monument....

, Medingėnai, Raseiniai

Raseiniai

Raseiniai is a city in Lithuania. It is located on the south eastern foothills of the Samogitians highland, some north from the Kaunas–Klaipėda highway.- Grand Duchy of Lithuania :...

, and Viduklė

Viduklė

Viduklė is a small town in a Raseiniai district municipality, Kaunas County, central-western Lithuania. As of 2001 it had a population of 1911.-References:*This article was initially translated from the Lithuanian Wikipedia....

) arrived to Königsberg around pentecost

Pentecost

Pentecost is a prominent feast in the calendar of Ancient Israel celebrating the giving of the Law on Sinai, and also later in the Christian liturgical year commemorating the descent of the Holy Spirit upon the disciples of Christ after the Resurrection of Jesus...

. They promised their loyalty to "their king" Vytautas and guaranteed trade freedom for the Knights in Samogitia. The Knights gifted the nobles with food and clothes.

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...

 waged a civil against his cousin 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 King of Poland. In order to secure Teutonic support in the civil war, Vytautas signed the Treaty of Lyck

Treaty of Lyck

The Treaty of Lyck was a treaty between Vytautas the Great, future Grand Duke of Lithuania, and the Teutonic Knights, represented by Marquard von Salzbach, komtur Arnold von Bürglen, and Thomas, son of Lithuanian duke Survila. It was signed on January 19, 1390 in Lyck...

 and granted Samogitia 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...

 to the Knights on January 19, 1390. Samogitia was important for the Knights as this territory physically separated them from uniting with 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...

 in the north. Support of Samogitians was crucial to Vytautas as it was the only guarantee that the Treaty of Lyck would be carried out. However, Vytautas betrayed the Knights when in 1392 he reconciled with his cousin Jogaila and signed 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...

. Samogitia was not ceded to the Knights until the Treaty of Salynas

Treaty of Salynas

Treaty of Salynas was a peace treaty signed on October 12, 1398 by the Grand Duke of Lithuania Vytautas the Great and the Grand Master of the Teutonic Knights Konrad von Jungingen. It was signed on an islet of the Neman River, probably between Kulautuva and the mouth of the Nevėžis River...

 in 1398. The treaty and the 30 names of Samogitian nobles are important for the study of personal names in pagan Lithuania.

List of Samogitian nobles

#	Reconstructed name	Recorded name	Where from	Notes
1	Asteika	Hosteike	Raseiniai
2	Bimantas, Bymantas	Bimunt	Viduklė
3	Daukša	Dawchs	Kaltinėnai
4	Dirkštelis	Dirkstel	Medininkai
5	Dramutis	Dramutte	Ariogala	In 1401 with his son he witnessed the Union of Vilnius and Radom
6	Eikutis	Eycutte	Kražiai	In 1419 he was a court official in Medininkai Varniai Varniai , is a city in the Telšiai County, western Lithuania. In the Middle Ages the city was known as Medininkai. It was established in the 14th century, on the bank of the Varnelė River, near an important Samogitian castle. It was the center of Samogitian Catholic church: after the baptism of...
7	Eimantas	Eymund	Kaltinėnai
8	Einorius, Einoras	Eynur	Kražiai	Brother of Eivildas
9	Eivildas, Eiviltas	Eywild Eynuren bruder	Kražiai	In 1413 m. received Ciołek coat of arms according to the Union of Horodło
10	Erimas	Erim	Ariogala
11	Gelvonas	Gelwan	Viduklė
12	Getas, Gedas	Getez	Kražiai
13	Gineitis	Gineth	Ariogala	In 1413 m. received Zaremba coat of arms according to the Union of Horodło, in 1433 served as elder of 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...
14	Jodeika, Joteikis	Jotheke	Ariogala
15	Klausigaila	Clawssegail	Raseiniai	Active during the Samogitian uprising of 1409, in 1413 testified in hearings regarding Samogitian border
16	Mazbutas	Maisebuth	Medininkai
17	Pamplys	Pampli	Knituva
18	Ragelis	Ragel	Kaltinėnai
19	Ramontas, Ramavydas	Ramomt, Ramouit	Kražiai
20	Rėkutis	Roeukutte	Medininkai
21	Skutas	Skutez	Kaltinėnai
22	Skvaibutis	Sqwaybuth	Kaltinėnai
23	Sungaila, Surgaila	Sungail	Viduklė	Might be identical to Sungalo who testified in the Council of Constance Council of Constance The Council of Constance is the 15th ecumenical council recognized by the Roman Catholic Church, held from 1414 to 1418. The council ended the Three-Popes Controversy, by deposing or accepting the resignation of the remaining Papal claimants and electing Pope Martin V.The Council also condemned and... in 1416 and was later killed by the Knights
24	Surtenis, Surtinis	Surthen	Viduklė
25	Tyla, Tylenis	Tilen	Kaltinėnai
26	Vidas, Vydas	Wide	Kražiai
27	Vilaudis, Vyliaudas	Wilawde	Ariogala
28	Zundys	Sunde	Ariogala
29	Žaudys	Zawden	Raseiniai
30	Žilpa	Zilpe	Knituva