Olga of Kiev Biography
Olga of Kiev was a regent of Kievan Rus on behalf of her son, Svyatoslav I, from 945 to 960, and was named a saint by the Russian Orthodox Church nearly 600 years after her death because of her efforts in spreading Christianity through Kiev. She became the ruler of Kiev as the guardian of her three-year-old son after her husband, Igor I of Kiev, was murdered by the Drevlians while attempting to collect tribute. According to the 'Primary Chronicle', she exacted brutal revenge on the tribe in various ways following his death. She reformed the tribute gathering system and established trading-posts and hunting grounds throughout her empire. She was converted to Christianity in around 957 in Constantinople by Patriarch Polyeuctus with Emperor Constantine VII as her godfather. Emperor Constantine VII - who later built several churches in her region despite resistance from her son. Her grandson, Vladimir, later converted the entire nation to Christianity, because of which both of them are treated as saints.