Complex sentence: Catherine P. Rostopchin (1776--1859) was a Russian aristocrat, writer and the wife of Feodor Rostopchin, who served as governor of Moscow during the French Invasion of Russia.
Split into simpler sentences: Catherine P. Rostopchin (1776--1859) was a Russian aristocrat and writer. She was the wife of Feodor Rostopchin, who served as governor of Moscow during the French Invasion of Russia.