King Sigismund II Augustus of Poland secretly falls in love with Barbara Radziwiłłówna, a noblewoman of Lithuanian magnate lineage, defying his mother Queen Bona’s plans to wed him to a French princess.
Jadwiga Smosarska
Barbara Radziwiłłówna
Jan Kurnakowicz
Stolnik Kieżgajłło
Ludwik Sempoliński
Poseł rakuski
Witold Zacharewicz
Zygmunt II August
Helena Buczyńska
Wujna Barbary
Jerzy Leszczyński
Leszczyński