Complex sentence: The nave ceiling frescoes of the "Glory of St Philip Neri" were completed by 1714 by Marcantonio Franceschini, who also painted the cornices with "Miracles and Life of the Saint".
Split into simpler sentences: The nave ceiling frescoes of the "Glory of St Philip Neri" were completed by 1714 by Marcantonio Franceschini. He also painted the cornices with "Miracles and Life of the Saint".