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.
Gregory the Bulgarian Gregory the Bulgarian (Russian: Григорий Болгарин ), or Gregory II ( 1458 – d. 1474) was an Uniate Ruthenian metropolitan in Kiev, then in the Grand Duchy of Lithuania. His official title was "Metropolitan of Kiev, Galich and All Rus'".