Vladimir Olgerdovich was a son of which ruler of medieval Lithuania?
Vladimir Olgerdovich Vladimir Olgerdovich (Belarusian: Уладзімер Альгердавіч , Lithuanian: "Vladimiras Algirdaitis" , Polish: "Włodzimierz Olgierdowic" , Ukrainian: Володимир Ольгердович ; died after 1398) was a son of Algirdas, Grand Duke of Lithuania, and his first wife Maria of Vitebsk. He was Grand Prince of Kiev from 1362 to 1394. His sons Ivan and Alexander started the Belsky and Olelkovich families.
Sophia of Lithuania Sophia (1371–1453) was the only daughter of Vytautas the Great of Lithuania and his first wife, Anna. On 21 January 1391, while her father was engaged in the Lithuanian Civil War, she married Vasili I of Russia. She was the longest serving consort of Russia. After Vasili's death in 1425 she became regent for their ten-year-old son Vasili II. Her father supported Vasili's claim to the throne, which was disputed by his uncle, Yuri of Zvenigorod. Sophia was buried in the Ascension Convent; the sarcophagus was moved in 1929 to the Cathedral of the Archangel by Soviet authorities.