The 1630 Treaty of Pereiaslav temporarily ended the Fedorovych Uprising but left Polish-Cossack tensions unresolved.
Key Facts
- Date signed
- Late June 1630
- Registered Cossacks allowed
- 8,000
- Cossack leader
- Taras Fedorovych
- Polish commander
- Hetman Stanisław Koniecpolski
- Cossack obligation
- Cease Ottoman raids; return captured Polish artillery
Location
Cause → Event → Consequence
The Fedorovych Uprising saw rebellious Cossack forces under Taras Fedorovych rise against Polish authority, creating a military confrontation that threatened Polish control over the region and prompted Hetman Stanisław Koniecpolski to lead a Polish force in response.
In late June 1630, Polish forces under Hetman Koniecpolski and the rebellious Cossacks of Taras Fedorovych concluded the Treaty of Pereiaslav, stipulating that Cossacks would halt raids on Ottoman territories, return artillery seized from the Poles, remove Fedorovych from leadership, and accept an increase of the registered Cossack limit to 8,000.
Fedorovych openly criticized the agreement as insufficient, and the treaty failed to resolve the deeper structural grievances between the Polish-Lithuanian Commonwealth and the Cossacks, leaving tensions that would continue to escalate in subsequent decades.
Political Outcome
Cossacks agreed to cease Ottoman raids, return captured artillery, and remove Fedorovych from command; registered Cossacks increased to 8,000, but underlying tensions remained unresolved.
Cossack rebellion under Fedorovych threatening Polish authority in the region
Polish authority nominally restored with expanded Cossack register, but tensions unresolved