Battle of 1047 between Casimir I and Miecław

Battle of 1047 between Casimir I and Miecław
Part of the Miecław's Rebellion and the crisis of the Piast dynasty
Date1047
Location
Result Polish victory
Belligerents
Duchy of Poland
Kievan Rus'
Miecław's State
Duchy of Pomerelia
Commanders and leaders
Casimir I the Restorer
Yaroslav the Wise
Miecław 
Strength
Unknown, including 3 Polish cavalry divisions 30 Miecław's cavalry divisions
Casualties and losses
Unknown Heavy

The Battle of 1047 between Casimir I and Miecław (Polish: Bitwa Kazimierza I z Miecławem 1047 roku) was fought in 1047, during the Miecław's Rebellion, between the Duchy of Poland led by Casimir I the Restorer and its ally, Kievan Rus' led by Yaroslav the Wise, against the forces of Miecław, the self-proclaimed leader of his state, with his ally, the Duchy of Pomerelia. The battle was fought near an unknown river in Masovia.

It was part of a campaign organized by Casimir I, during which, he had invaded Miecław's state. The battle ended with a decisive Polish victory, the death of Miecław, and the destruction of his forces. Subsequently, Miecław's state was reincorporated into Poland soon after.