Alexander Vygantas was the duke of which city in Lithuania?
Kernavė Kernavė was a medieval capital of the Grand Duchy of Lithuania and today is a tourist attraction and an archeological site (population 318, 1999). It is located in the Širvintos district municipality located in southeast Lithuania. A Lithuanian state cultural reserve was established in Kernavė in 1989. In 2004 Kernavė Archaeological Site was included into UNESCO world heritage list.
Tautvilas Tautvilas (or Tautvila; died 1263) was Duke of Polatsk and one of the sons of Dausprungas and nephews of King of Lithuania Mindaugas. Tautvilas together with his brother Edivydas and uncle Vykintas waged a civil war against Mindaugas. The war resulted in coronation of Mindaugas.