 After the death of Bolesław in 1138, Władysław II became the new duke of Poland, and he reinstated Włostowic to the rank of voivode, as he did not want Wszebor, supporter of his brothers, to retain that rank.However Bolesław, who had had seven sons, in his last will had attempted to significantly reform the Polish monarchy in an attempt to prevent a civil war.Unfortunately, the attempt not only proved futile, but led into the period known as the fragmentation of Poland.