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.
Radziwiłł Palace, Vilnius Radziwiłł Palace (Lithuanian: "Radvilų rūmai" , Polish: "Pałac Radziwiłłów" ) is a Late Renaissance palace in the Old Town of Vilnius, Lithuania. It was the largest but second in importance of Radziwiłłs' palaces in Vilnius.