Complex sentence: Pope Paschal I (817-24) translated the bones of the two martyrs to a chapel in the old basilica of St. Peter; they still rest under the altar dedicated to them in the right (south) transept of the present St. Peter's.
Split into simpler sentences: Pope Paschal I (817-24) translated the bones of the two martyrs to a chapel in the old basilica of St. Peter. They still rest under the altar dedicated to them in the right (south) transept of the present St. Peter's.