Yaropolk I, Tsar of Russia

Yaropolk I Svaitoslavovich (952 - 11 June 978) was the son of Svaitoslav I and Predslava, which makes him the grandson and great-grandson of Igor and Rurik respectfully, the older brother of Oleg and the older paternal half-brother of Vladimir I. He married a Greek Nun, but she gave birth to a son who's paternity was disputed between him and his brother Vladimir.