Hello all, I apologise if this is not the correct place for this question I could not find any better sub.

I am looking for background on a portrait of King Jadwiga which seems to constantly come up in my research into her and her husband, unfortunately as I do not speak Polish I can't seem to find many details about when it was painted and who by, as well as any other general details which may be available.

The portrait in question is the first one on this page: http://ludzie.info/lista/krolowa-jadwiga/

Just wondering if anyone here could help out? Thanks!