Complex sentence: Johanna Schopenhauer, "née" Trosiener (July 9,1766--April 17,1838), was a German author who is currently known primarily for being the mother of Arthur Schopenhauer.
Split into simpler sentences: Johanna Schopenhauer, "née" Trosiener (July 9,1766--April 17,1838), was a German author. She is today known primarily for being the mother of Arthur Schopenhauer.