Dobrynya was Vladimir the Great's maternal uncle and tutor who was later transformed into the invincible bogatyr Dobrynya Nikitich in the East-Slavic folklore. Dobrynya's life and extent of his influence on Vladimir are shrouded in speculation and controversy. It's fairly certain that his sister Malusha was Vladimir's mother. It's also generally accepted that Dobrynya's posadnik dynasty in Novgorod was continued by his son Konstantin Dobrynich and grandson Ostromir. According to the Novgorod ch… (More on Dobrynya)