Irrefutable proof that Charpentier went to Rome and studied with Carissimi
Rome: Charpentier as a Rome-trained rhetorician, per the Journal de Trévoux
Rome and the Jesuits: can we believe that Charpentier actually met Carissimi?
And for imagery that may be connected to Charpentier's stay in Rome, see my Musing on St. Cecilia.