# Union of Vilnius and Radom (1401)

URL: https://poland-history.com/timeline/1401-union-of-vilnius-and-radom
Location: Vilnius and Radom

The union was renewed, confirming Vytautas as Grand Duke under Jagiełło's supremacy. Within the broader Jagiellonian Age period: The union with Lithuania created one of Europe's largest states. Victory over the Teutonic Order, the rise of noble democracy and a brilliant Renaissance culture marked the Jagiellonian golden age. At this point in the timeline (1401), the governing authority was Władysław II Jagiełło (King of Poland). Grand Duke of Lithuania who became King of Poland, Christianised Lithuania and defeated the Teutonic Order at Grunwald. Union of Vilnius and Radom mattered because its terms redrew borders or alliances and constrained Poland's options for years to come. The event is placed here so readers can follow it alongside changes in government, warfare, society, religion and culture across Polish history.

## Why it matters
Union of Vilnius and Radom mattered because its terms redrew borders or alliances and constrained Poland's options for years to come.

Ruler at the time: [Władysław II Jagiełło](https://poland-history.com/rulers/wladyslaw-ii-jagiello)

## Sources
- [Wikipedia — Pact of Vilnius and Radom](https://en.wikipedia.org/wiki/Pact_of_Vilnius_and_Radom)
- [Encyclopaedia Britannica topic lookup — Union of Vilnius and Radom](https://www.britannica.com/search?query=Union+of+Vilnius+and+Radom)
- [Wikipedia — Jagiellonian dynasty (period overview)](https://en.wikipedia.org/wiki/Jagiellonian_dynasty)