# Defence of Głogów against Henry V (1109)

URL: https://poland-history.com/timeline/1109-defence-of-glogow-against-henry-v
Location: Głogów
Categories: battle

Defenders of Głogów held off Emperor Henry V's invasion; legend adds a victory at Psie Pole ('Dog Field'). 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 (August 1109), the governing authority was Bolesław III Wrymouth (Duke of Poland). Defended Poland against the Emperor Henry V, conquered Pomerania and left a testament dividing the country among his sons. Defence of Głogów against Henry V 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
Defence of Głogów against Henry V mattered because it changed the military or territorial balance and influenced the political choices that followed.

Ruler at the time: [Bolesław III Wrymouth](https://poland-history.com/rulers/boleslaw-iii-wrymouth)

## Sources
- [Wikipedia — Siege of Głogów](https://en.wikipedia.org/wiki/Siege_of_G%C5%82og%C3%B3w)
- [Encyclopaedia Britannica topic lookup — Defence of Głogów against Henry V](https://www.britannica.com/search?query=Defence+of+G%C5%82og%C3%B3w+against+Henry+V)
- [Wikipedia — History of Poland during the Piast dynasty (period overview)](https://en.wikipedia.org/wiki/History_of_Poland_during_the_Piast_dynasty)