One interesting thing is the perception of Jogalia aka Władysław II Jagiełło (King of Poland and Grand Duke of Lithuania) by Polish and Lithuanians nowadays. I'm pretty sure he's quite cherished historically in Poland due to his relatively stable rule and rather famous wars waged against Teutonic order, incl. battle of Tannenberg (the OG battle).
On the other hand, it seems that there was a period when Jogalia was perceived in a rather negative light by Lithuanians. Not sure if 'traitor' is the right description of that sentiment, but definitely getting into a personal union, that ultimately led to the formation of the Polish-Lithuanian Commonwealth, seems to be judged rather unfavourably. From what I could understand, the dominance of Polish in that union was detrimental to the Lithuanian identity over time?<p>If anybody knows to what extent and for what exact reasons we see those differing pictures of the same person by peoples of two countries that constituted the same political body for quite some time, I'd be interested in hearing some details.