Complex sentence: McIntosh also quotes a Mr. Snead, who was related to the Harts, about a time when Nancy was cooking lye soap in her cabin when her daughter discovered a spy looking through a crack in the wall.
Split into simpler sentences: McIntosh also quotes a Mr. Snead, who was related to the Harts. He said that one time Nancy was cooking lye soap in her cabin when her daughter discovered a spy looking through a crack in the wall.