Jogaila

Jogaila was a Lithuanian ruler who became king of Poland as Władysław II Jagiełło. His conversion to Christianity and dynastic union reshaped relations between Lithuania and Poland.

Algirdas: A grand duke of Lithuania whose expansion made the realm a major power in eastern Europe. Jogaila inherited the Lithuanian throne from his father in 1377.
Christianization of Lithuania: The adoption and institutional establishment of Christianity in Lithuania, accelerated by the ruling dynasty’s conversion in 1387. Jogaila’s baptism initiated the official Christianization of Lithuania.
Battle of Grunwald: A 1410 battle in which Polish and Lithuanian forces defeated the Teutonic Order in one of medieval Europe’s largest engagements. Jogaila commanded the allied army that defeated the Order’s forces.
Władysław II Jagiełło: The Polish royal name of Jogaila, who was crowned king of Poland in 1386. This name identifies the same ruler in Polish histories and records.
Kęstutis: A grand duke of Lithuania who defended its western frontier and contested power with his nephew Jogaila. Their struggle for the Lithuanian throne shaped Jogaila’s early rule.
Union of Vilnius and Radom: A 1401 agreement that recognized Vytautas as grand duke of Lithuania while preserving his political bond with Jogaila. It formalized the balance between Jogaila’s kingship and Vytautas’s Lithuanian authority.
Teutonic Order: A Catholic military order that ruled territories around the Baltic Sea and fought neighboring states, including Poland and Lithuania. Its conflict with Jogaila’s realms culminated in the defeat at Grunwald.
Vytautas the Great: The honorific name for Vytautas, the Lithuanian grand duke who governed alongside Jogaila and pursued independent authority. His rule shows that Jogaila’s Lithuanian power was shared, not absolute.
Lithuanian Civil War (1381–1384): A dynastic conflict between Jogaila and Kęstutis, followed by Vytautas’s challenge to Jogaila’s authority. The conflict forced Jogaila to negotiate alliances and contest control of Lithuania.
Union of Horodło: A 1413 agreement that strengthened Polish-Lithuanian ties and extended privileges to Catholic Lithuanian nobles. Jogaila and Vytautas used it to deepen their political union.

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