# Sigismund II Augustus becomes King (1548)

URL: https://poland-history.com/timeline/1548-sigismund-ii-augustus-becomes-king
Location: Kraków
Categories: ruler-change

Sigismund II, crowned in his father's lifetime, began his personal rule; his secret marriage to Barbara Radziwiłł caused a political storm. 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 (1548), the governing authority was Sigismund II Augustus (King of Poland). Last male Jagiellon; oversaw the Union of Lublin that created the Polish–Lithuanian Commonwealth. Sigismund II Augustus becomes King mattered because succession and legitimacy shaped alliances, institutions and the direction of state policy. 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
Sigismund II Augustus becomes King mattered because succession and legitimacy shaped alliances, institutions and the direction of state policy.

Ruler at the time: [Sigismund II Augustus](https://poland-history.com/rulers/sigismund-ii-augustus)

## Sources
- [Wikipedia — Sigismund II Augustus](https://en.wikipedia.org/wiki/Sigismund_II_Augustus)
- [Encyclopaedia Britannica topic lookup — Sigismund II Augustus becomes King](https://www.britannica.com/search?query=Sigismund+II+Augustus+becomes+King)
- [Wikipedia — Jagiellonian dynasty (period overview)](https://en.wikipedia.org/wiki/Jagiellonian_dynasty)