 As her father Vladimir died about 25 years before that marriage and she was still young enough to bear at least five children, including two future Polish dukes (Boleslaw II of Poland, who later became a king, and Wladyslaw Herman), it is thought probable that she was Vladimir's daughter by the last marriage.There is also a case for Yaroslav's descent from Anna.According to this theory, Nestor the Chronicler deliberately represented Yaroslav as Rogneda's son, because he systematically removed all information concerning Kievan ties with Byzantium, spawning pro-Varangian bias (see Normanist theory for details).