Vytautas in the context of "Władysław II Jagiełło"

Kreva Castle (Belarusian: Крэўскі замак, Lithuanian: Krėvos pilis, Polish: zamek w Krewie) is the ruins of a major fortified residence of the rulers of Grand Duchy of Lithuania Gediminas and Algirdas in the village of Kreva, Belarus. The village lies 220 metres (720 ft) above sea level.

During the Lithuanian Civil War (1381–1384), Jogaila, Algirdas's son, arrested and imprisoned his uncle Kęstutis and cousin Vytautas in the Kreva Castle in 1382. One week later, Kęstutis was found dead. Whether he died of natural causes or was murdered is still a matter of debate. His son, Vytautas, however, escaped from Kreva and fled to the Teutonic Order.

The Battle of Grunwald was fought on 15 July 1410 during the Polish–Lithuanian–Teutonic War. The alliance of the Crown of the Kingdom of Poland and the Grand Duchy of Lithuania, led respectively by King Władysław II Jagiełło (Jogaila), and Grand Duke Vytautas, decisively defeated the German Teutonic Order, led by Grand Master Ulrich von Jungingen. Most of the Teutonic Order's leadership was killed or taken prisoner.

Although defeated, the Teutonic Order withstood the subsequent siege of the Malbork Castle and suffered minimal territorial losses at the Peace of Thorn (1411), with other territorial disputes continuing until the Treaty of Melno in 1422. The order, however, never recovered their former power, and the financial burden of war reparations caused internal conflicts and an economic downturn in the lands controlled by them. The battle shifted the balance of power in Central and Eastern Europe and marked the rise of the Polish–Lithuanian union as the dominant regional political and military force.

The Pact of Vilnius and Radom (Polish: Unia wileńsko-radomska, Lithuanian: Vilniaus-Radomo sutartis) was a set of three acts passed in Vilnius, Grand Duchy of Lithuania, and confirmed by the Crown Council in Radom, Kingdom of Poland in 1401. The union amended the earlier act of the Union of Krewo (1385) and confirmed the Ostrów Agreement (1392). Vytautas, Grand Duke of Lithuania, became fully in charge of the Lithuanian affairs, while Władysław II Jagiełło, King of Poland, reserved the rights of an overlord. After the death of Vytautas, Lithuania was to be ruled by Władysław II Jagiełło or his legal heir. The union is generally seen as strengthening of the Polish–Lithuanian union.

The Union of Horodło or Pact of Horodło was a set of three acts signed in the town of Horodło on 2 October 1413. The first act was signed by Władysław II Jagiełło, King of Poland, and Vytautas, Grand Duke of Lithuania. The second and third acts were composed by the Polish nobility (szlachta) and Lithuanian boyars, respectively. The union amended the earlier Polish–Lithuanian unions of Krewo and Vilnius–Radom. Politically, Lithuania received more autonomy as, after the death of Vytautas, the Lithuanian nobles could choose another Grand Duke instead of passing the title to Władysław II Jagiełło or his heir. However, culturally, Lithuania and Poland grew closer. Lithuania adopted Polish institutions of castellans and voivodes. Catholic Lithuanian nobles and church officials were granted equal rights with the Polish nobles and clergy. Forty-seven selected Lithuanian nobles were adopted by Polish families and granted Polish coats of arms. Thus the union signified the beginnings of the Polonization of Lithuanian culture and the rise of the Lithuanian nobility. It was one of the major steps towards the modernization and Europeanization of Lithuania.

Vasily I Dmitriyevich (Russian: Василий I Дмитриевич; 30 December 1371 – 27 February 1425) was Grand Prince of Vladimir and Moscow from 1389. He was the heir of Dmitry Donskoy, who reigned from 1359 to 1389.

He entered an alliance with the Grand Duchy of Lithuania in 1392 and married Sophia, the only daughter of Vytautas, though the alliance turned out to be fragile, and they waged war against each other in 1406–1408.