Complex sentence: She was rejected by her step- "mother" and thus her dad, who both returned for England while Elisabeth and Mary Magdalene were raised at new Rochelle, NY by Sarah Pell (Peter) and uncle Richard Bayly.
Split into simpler sentences: She was rejected by her step- "mother" and thus her dad, who both returned for England while Elisabeth and Mary Magdalene. They were raised at new Rochelle, NY by Sarah Pell (Peter) and uncle Richard Bayly.