Complex sentence: Clemens von Zimmermann, historical painter, was born at Düsseldorf in 1788; he studied in his native town under Johann Peter von Langer, and in 1808 he accompanied his master to Munich, where he entered the Academy.
Split into simpler sentences: Clemens von Zimmermann, historical painter, was born at Düsseldorf in 1788. He studied in his native town under Johann Peter von Langer, and in 1808 he accompanied his master to Munich, where he entered the Academy.