Complex sentence: In 1624, a horrible plague haunted Palermo, and during this hardship St Rosalia appeared first to a sick woman, then to a hunter to whom she indicated where her remains were to be found.
Split into simpler sentences: In 1624, a plague beset Palermo, and during this hardship Saint Rosalia appeared first to a sick woman. She then to a hunter to whom she indicated where her remains were to be found.