Miecław

Miecław[a] (10th/11th century – 1047) was a cup-bearer of king Mieszko II Lambert, who in c. 1038 had proclaimed independence of the state that he ruled, from the Duchy of Poland, beginning the rebellion that lasted until his death in 1047.

[1] Seizing the opportunity, around 1038, the cup-bearer Miecław had formed the state in Masovia, declaring its independence from Poland, and started his own royal dynasty.

[2] He had formed an alliance with Yaroslav the Wise, Grand Prince of Kiev, the leader of Kievan Rus', via the marriage of Maria Dobroniega with Casimir.

The battle ended with a decisive Polish victory and destruction of Miecław's army and led to the signing of the truce between both sides.

[5][6] The location of the battle remains unknown in modern times, though it was known to the 11th-century historian, Gallus Anonymus, according to whom, it took place near the river, with the bluff edge.