 In the 19th century this image begun to <unk> , as a new wave in historiography begun to <unk> his life , and as the era of <unk> 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 <unk> , with various aspects of his life and personality being questioned and criticized in the work of historians such as Karol <unk> and <unk> <unk> . 
