Cardinal Monaldi died in Perugia on 20 January 1644, at the age of fifty-six, only thirty-five days after his resignation of the diocese of Perugia. He was buried in the family chapel in the Church of S. Maria Nuova dei Servi.Mariotti, p. 151 (who places the death on 18 January). Gauchat, p. 277, note 3.
