Question: Petras Jonaitis Mantigirdaitis, was a prominent noble of the Grand Duchy of Lithuania. in 494, Mantigirdaitis was sent on the diplomatic mission to negotiate peace with the Grand Duchy of Moscow and marriage of Helena of Moscow to where?
Sentence (from "Lithuanian Chronicles"): The first edition, compiled in the 1420s, glorified Vytautas the Great and supported his side in power struggles.
Relevant evidence: No