In 1264, the Duke of Krakow, Boleslaw V the Chaste organizes an expedition against Yotvingia, who are allied with Shvarn, the Duke of the Kingdom of Galicia–Volhynia.On 23 June 1264, the two armies meet near Brańsk.
The Battle of Brańsk lasts two days, pitting the forces of Yotvingia, led by Komata (Kumata) against the well equipped Krakovian army.
The Yotvingian forces are routed in a bloody battle and Komata is killed.Despite the defeat of the Yotvingian forces, skirmishes occur for another 20 years.
