expertise led him to increasingly rely on an unscrupulous secretary (Cardinal Niccolò Coscia) whose financial abuses ruined the papal treasury, causing great damage to the Church in Rome.

In the process towards sainthood, his cause for canonization opened in 1755, but it was closed shortly afterwards. It was reopened on 21 February 1931, but it was closed once again in 1940. It was opened once more on 17 January 2004, with the official process commencing in 2012