What was the title that XXX held?
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.
Grand Duke of Lithuania