Saint Princess Olga, who was the first Russian saint of the Orthodox Church, is the patron of widows and converts. She was a regent of Kievan Rus' for her son Svyatoslav from 945 until 960 and is known for her obliteration of the Drevlians, a tribe that had killed her husband Igor of Kiev. Even though it would be her grandson Vladimir that would convert the entire nation to Christianity, her efforts to spread Christianity through the Rus’ earned Olga veneration as a saint.