Registered Cossacks
Krzysztof Kosiński, also Kryshtof Kosynsky of Rawicz Coat of Arms (, "Kryshtof Kosynsky"; ; 1545–1593) was a Cossack noble from the Podlachia region. He was a colonel of the Registered Cossacks and self-proclaimed Hetman of Ukraine. He led two consecutive rebellions against local Ruthenian nobility, known as the Kosiński Uprising.