Albertas Manvydas

Along with Stanislovas Čiupurna, Manvydas was the most influential noble during the early reign of Grand Duke Vytautas.

[1] Manvydas was first mentioned in a document dated 1387–89 when he, along other nobles, vouched for Hryćko Konstantynowicz who organized a rebellion against Skirgaila, regent of the Grand Duchy of Lithuania in the name of his brother Jogaila.

Polish historians Władysław Semkowicz and Marceli Antoniewicz have attempted to identify her with Jadwiga of Leżenic [pl] who adopted Manvydas in the 1413 Union of Horodło.

Origo regis Jagyelo et Witholdi ducum Lithuaniae mentions that Juliana, who later married Manvydas, was wife of Butrimas, the murdered nephew of Birutė and cousin of Vytautas.

Jan Długosz mentions that Juliana was a widow of Narimantas, who died in defense of Vilnius in 1390, and a sister of Anna, wife of Vytautas.

[12] Lithuanian historian Inga Baranauskienė suggested that Manvydas rose to prominence in the service of Vytautas due to them being in-laws and that Jadviga (mentioned once in a 1407 document) was just a baptismal name of Juliana.