 <unk> at the age of seven , Wiśniowiecki was raised by his uncle , Konstanty Wiśniowiecki , whose branch of the family were Roman Catholics . Jeremi attended a Jesuit college in Lwów and later , in 1629 , he traveled to Italy , where he briefly attended the University of Bologna . He also acquired some military experience in the Netherlands . The upbringing by his uncle and the trips abroad <unk> him , and turned him from a provincial Ruthenian <unk> into one of the youngest magnates of the Polish @-@ Lithuanian Commonwealth . 
