Butautas

Butautas (baptized Henryk; died on May 7, 1380, in Prague) was a son of Kęstutis, Grand Duke of Lithuania.

While Algirdas and Kęstutis were in Volhynia helping their brother Liubartas in the Galicia–Volhynia Wars, Butautas together with other nobles attempted a coup d'état.

[5][7] Two Bishops, John of Warmia and Bartholomew of Sambia were summoned for the ceremony, also attended by English crusaders, including Earl of Warwick and Thomas Ufford.

Sometime between August 1366 and April 1368, Butautas departed to Prague to join the court of Charles IV, Holy Roman Emperor.

This last charter listed Butautas as "King of Lithuania" together with imperial family and before papal legates and other Bohemian dukes.

[6] At some point, the court was visited by German poet Schondoch who later composed a poem how an unnamed "Lithuanian king" was converted into Christianity.