Krzysztof Kolberger as Anonimus

Jan Machulski as Ochmistrz Wolski

Jerzy Trela as Mikołaj "Czarny" Radziwiłł, brat Barbary

Jerzy Zelnik as Zygmunt II August

Bożena Adamek as Elżbieta Habsburżanka

Marek Kondrat as Andrzej Frycz-Modrzewski

Aleksandra Śląska as Queen Mother Bona Sforza d'Aragon

Anna Dymna as Barbara Radziwillówna

Hanna Stankówna as Katrina

Zdzisław Kozień as Zygmunt I Stary

Leonard Pietraszak as Piotr Kmita

Franciszek Pieczka as Piotr Boratynski