In the 19th century this image begun to waver , as a new wave in historiography begun to reinterpret his life , and as the era of positivism in Poland put more value on builders , and less on warriors . Further , at that time the Polish historians begun to question the traditional view of the " Ukrainian problem " , and the way that the Polish noble class had dealt with the Cossacks . Slowly , Wiśniowiecki 's image as a hero began to waver , with various aspects of his life and personality being questioned and criticized in the work of historians such as Karol Szajnocha and Józef Szujski .