登録コサック
On 3 July 1637 Pavlyuk arrived at Kaniów, where he tried to convince the remaining leaders of the Registered Cossacks to betray their loyalty to the king of Poland and fight with him for an autonomous Cossack state between Kiev and Bila Tserkva. However, the Cossack leaders remained sceptical and most remained loyal to the Commonwealth. Unable to convince the well-trained and well-equipped Registered Cossacks to join him, Pavlyuk also dispatched emissaries to Alexis I, tsar of Muscovy and to İnayet Giray, the khan of Crimea. His efforts at securing outside help proved equally unsuccessful.