Alexander Vygantas was the duke of which city in Lithuania?
Vygantas Vygantas (baptized Alexander; Polish: "Wigunt" ; died June 28, 1392) was Duke of Kernavė. He was one of the sons of Algirdas, Grand Duke of Lithuania (1345–1377), and his second wife Uliana Alexandrovna of Tver.
Northwestern Krai Northwestern Krai (Russian: Северо-Западный край ) was a subdivision ("krai") of Russian empire in the territories of the former Grand Duchy of Lithuania (present day Belarus and Lithuania). The center was in Vilna city.