# Treaty of Saint-Clair-sur-Epte (911)

URL: https://history-france.com/timeline/911-treaty-of-saint-clair-sur-epte
Location: Normandy

Charles the Simple granted lands around the lower Seine to Rollo, laying foundations of Normandy. Within the broader West Francia & Early Capetians period, After the Treaty of Verdun, West Francia developed under Carolingian, Robertian and Capetian rulers. Viking settlement, feudal lordship, church reform and expanding royal authority reshaped the kingdom. At this point in the timeline, the relevant governing authority is Charles III the Simple (King of West Francia). Treaty of Saint-Clair-sur-Epte mattered because it reshaped France’s external relationships, territory or place in wider international systems. The event is positioned here so visitors can read it alongside changes in government, warfare, society, religion, culture and France’s wider international setting.

## Why it matters
Treaty of Saint-Clair-sur-Epte mattered because it reshaped France’s external relationships, territory or place in wider international systems.

Ruler at the time: [Charles III the Simple](https://history-france.com/rulers/charles-iii-the-simple)

## Sources
- [Wikipedia topic lookup — Treaty of Saint-Clair-sur-Epte](https://en.wikipedia.org/wiki/Special:Search?search=Treaty+of+Saint-Clair-sur-Epte&go=Go)
- [Encyclopaedia Britannica topic lookup — Treaty of Saint-Clair-sur-Epte](https://www.britannica.com/search?query=Treaty+of+Saint-Clair-sur-Epte)
- [Wikipedia — Timeline of French history](https://en.wikipedia.org/wiki/Timeline_of_French_history)