For the first time in the history of Lviv, during the siege of the city his regiment captured the Vysokyi Zamok Castle, which was defended by the strong Polish–Lithuanian garrison.

A Polish pamphlet published in 1648 claimed that he was a serf of the Nemyrych family[2] (a hypothesis favoured by Soviet historiography).

[3] In this case his real name may well have been not a nickname based on his crooked or broken nose, but a translation of his Scottish family name Cameron.

His actions in Korsun and Pylyavtsi battles in 1648 led to crushing Cossack victories over the Polish armies.

[4] Jewish chronicles of that time portray Kryvonis as being responsible for the most brutal attacks on Jews and Poles in 1648.