According to archaeological research, during the 970s the Sandomierz region and the Przemyśl area inhabited by the Lendians became incorporated into the Polish state.
Menurut penelitian arkeologi, selama tahun 970-an wilayah Sandomierz dan wilayah Przemyśl yang dihuni oleh orang-orang Lędzianie dimasukkan ke dalam negara Polandia.