Complex sentence: The advent of Napoleon earned him trouble again after he hid the Royalist Antoine-Joseph Barruel Beauvert at his home, and employed him as a proofreader, when Beauvert was outlawed following the coup of 18 Fructidor (September 4,1797).
Split into simpler sentences: The advent of Napoleon earned him trouble again after he hid the Royalist Antoine-Joseph Barruel Beauvert at his home, and employed him as a proofreader. Beauvert had been outlawed following the coup of 18 Fructidor (September 4,1797).