 In 1631 Wiśniowiecki returned to the Commonwealth and took over from his uncle the management of his father 's huge estate , which included a large part of what is now Ukraine . In 1632 he converted from Eastern Orthodoxy to Catholicism , an action that caused much concern in Ukraine . His decision has been analyzed by historians , and often criticized , particularly in Ukrainian historiography . The Orthodox Church feared to lose a powerful protector , and Isaiah Kopinsky , metropolitan bishop of Kiev and a friend of his mother , unsuccessfully plead with him to change his mind . Jeremi would not budge although he remained on decent terms with the Orthdox Church , avoiding provocative actions , and supported his uncle and Orthodox bishop Peter Mogila and his Orthodox Church collegium . 
 In 1631 Wiśniowiecki returned to the Commonwealth and took over from his uncle the management of his father <a href='null_genetive' title='1'><mark>'s</mark></a>huge estate , which included a large part of what is now Ukraine . In 1632 he converted from Eastern Orthodoxy to Catholicism , an action <a href='null_relcl' title='2'><mark>that</mark></a>caused much concern in Ukraine . His decision <a href='been_done' title='3'><mark>has</mark></a> been analyzed by historians , and often criticized , particularly in Ukrainian historiography . The Orthodox Church feared to lose a powerful protector , and Isaiah Kopinsky , metropolitan bishop of Kiev and a friend of his mother , unsuccessfully plead with him to change his mind . Jeremi would not budge although he remained on decent terms with the Orthdox Church , avoiding provocative actions , and supported his uncle and Orthodox bishop Peter Mogila and his Orthodox Church collegium . 
In 1631 Wiśniowiecki returned to the Commonwealth and took over from his uncle da management of his father  bigass estate , which included a bigass part of wat is now Ukraine . In 1632 he converted from Eastern Orthodoxy to Catholicism , an action caused much concern in Ukraine . His decision done been analyzed by historians , and often criticized , particularly in Ukrainian historiography . TdaOrthodox Church feared to lose a powerful protector , and Isaiah Kopinsky , metropolitan bishop of Kiev and a friend of his mother , unsuccessfully plead witt him to change his mind . Jeremi would not budge although he remained on decent terms with the Orthdox Church , avoiding provocative actions , and supported his uncle and Orthodox bishop Peter Mogila and his Orthodox Church collegium .