# Mieszko defeats Wichmann the Younger (967)

URL: https://poland-history.com/timeline/967-mieszko-defeats-wichmann-the-younger
Location: Pomerania
Categories: battle

With Czech help Mieszko defeated the Wolinians led by Wichmann the Younger, who died in the battle, strengthening Polish control of the Oder estuary. Within the broader Piast Monarchy period: Under Mieszko I and his successors the Piast state accepted Christianity, gained its own church province and royal crown, and fought to hold its place between the Holy Roman Empire, Bohemia and Kievan Rus'. At this point in the timeline (22 September 967), the governing authority was Mieszko I (Duke of the Polans). First historically documented ruler of Poland; his baptism in 966 brought the Polans into Latin Christendom. Mieszko defeats Wichmann the Younger mattered because it changed the military or territorial balance and influenced the political choices that followed. 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
Mieszko defeats Wichmann the Younger mattered because it changed the military or territorial balance and influenced the political choices that followed.

Ruler at the time: [Mieszko I](https://poland-history.com/rulers/mieszko-i)

## Sources
- [Wikipedia — Wichmann the Younger](https://en.wikipedia.org/wiki/Wichmann_the_Younger)
- [Encyclopaedia Britannica topic lookup — Mieszko defeats Wichmann the Younger](https://www.britannica.com/search?query=Mieszko+defeats+Wichmann+the+Younger)
- [Wikipedia — History of Poland during the Piast dynasty (period overview)](https://en.wikipedia.org/wiki/History_of_Poland_during_the_Piast_dynasty)