Olga was a regent of Kievan Rus' for her son Sviatoslav from 945 until 960. Following her baptism, Olga took the name Elenа. She is known for her subjugation of the Drevlians, a tribe that had killed her husband Igor. Wikipedia
Died: July 24, 969 AD, Kievan Rus'
Spouse: Igor of Kiev (m. 903 AD–945 AD)
Place of burial: Tithe Church, Kyiv, Ukraine
Great grandchildren: Yaroslav the Wise, Stanislav, Iziaslav of Polotsk, and more
Grandchildren: Vladimir the Great, Yaropolk I of Kyiv, and Oleg of Drelinia
Children: Sviatoslav I
Full name: Olga of Kiev