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.
Grigory Bogdanovich Volovich Grigory Bogdanovich Volovich (born in 1535 – died in 1577) was a statesman of the Grand Duchy of Lithuania, diplomat of the Lord's gentleman (from 1548), the Mayor of Grodno (1558–1566), Marshal of Dvorny (1560–1563), of the Lord's Stalker (1567–1574), governor of Smolensk Voivodeship (1571–1577), the elder of Mstsislaw (1548–1567), sovereign of Varniany and Zel’va (1558–1569).