Średniowiecze Polskie i Powszechne, T. 4 (2007), s. 203-207
The author o f the paper presents the problem of Klemens Jastrzębiec from Lubnice’s affinity
with archbishop Wojciech Jastrzębiec’s family and agrees with the claim that Klemens was father’s
brother and not the brother o f Wojciech Jastrzębiec as it was noted on historiography. His career
in the royal court was of much help to many members o f that family and in particular to Wojciech
who became an archbishop of Gniezno.