I read that most of the Lithuainian elite were "Polanized" in a linguistic-cultural sense. J. Pilsudski was example of this.
MiĆosz tells a funny story about his uncle who upon discovering that Lithuanian nationalism existed decided to support it, but he, like alot of other Lithuanian nationalists from the gentry, couldn't speak Lithuanian and so he set about learning "endless conjugations." The Lithuanian language having spent most of existence in extreme isolation maintained the ultra-complex verbal conjugations of the ancient Indo-European languages, so much so that once unversities in Europe began offering courses in Sanskrit they soon added classes in Lithuanian too, because studying the latter helped one to learn the former.