34 Since St. Francis, up to this time, has not been named the Patron of Writers in any solemn and public document of this Apostolic See, We take this happy occasion, after mature deliberation and in full knowledge, by Our Apostolic authority, to hereby publish, confirm and declare by this encyclical, everything to the contrary notwithstanding, St. Francis de Sales, Bishop of Geneva and Doctor of the Church, to be the Heavenly Patron of all Writers.
Source: Rerum Omnium Perturbationem (Vatican.va)