Conversation so far:
What country is Joseph Conrad born in?
Joseph Conrad was born in Berdychiv, Ukraine, then part of the Russian Empire; the region had once been part of the Crown of the Kingdom of Poland.
Which commonwealth was Joseph Conrad from?
Joseph Conrad was a Russian subject, having been born in the Russian part of what had once been the Polish–Lithuanian Commonwealth.

Question: Whats important about the article?
Self-contained rewrite: Whats important about the Joseph Conrad article?