::I have no relation with the family and can't recall exactly why did I expand this article series. One scenario could be like this: while running around wikipedia I click some article on a notable historical person (especially scientist) without a proper portrait, find and tidy a portrait, notice glaring problems like missing birth/death dates, and while looking for them find a proper literature source and expand the article. I have some respect to past achievements which tend to be forgotten - we've got so many articles on wikipedia on young individuals only because they were mentioned in some recent news, not because they contributed anything useful. I also have long-standing interests with Russia and read the language that helps a lot with the sources.