Who is the paternal progenitor of XXX?
Jaunutis
Jaunutis (Belarusian: Яўнут; literally young man; baptized: Ioann,``Jawnuta'', ``John'' or ``Ivan''; ca. 1300 -- after 1366) was the Grand Duke of Lithuania from his father Gediminas' death in 1341 until he was deposed by his elder brothers Algirdas and Kęstutis in 1345.
Gediminas