 Probably after failure of his mission, he became abbot of a monastery in Memleben (Unger kept this title till end of his life).Most probably in 991 or 992 Unger arrived to Poland as a successor of Jordan who died in 984.After creation of new Polish metropolis in Gniezno with archbishop Radim Gaudentius he forced keeping independence of Poznań bishopric from new ecclesiastical province.