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.
Simeon of Moscow Simeon Ivanovich Gordiy (the Proud) (Семён Иванович Гордый in Russian) (7 November 1316 – 27 April 1353) was Prince of Moscow and Grand Prince of Vladimir. Simeon continued his father's policies aimed to increase the power and prestige of his state. Simeon's rule was marked by regular military and political standoffs against the Novgorod Republic and Lithuania. His relationships with neighboring Russian principalities remained peaceful if not passive: Simeon stayed aside from conflicts between subordinate princes. He had recourse to war only when war was unavoidable. A relatively quiet period for Moscow was ended by the Black Death that claimed the lives of Simeon and his sons in 1353.