Blessed César de Bus (†1607) was a French Catholic priest, founder of "Prêtres séculiers de la doctrine chrétienne (Secular Priests of Christian Doctrine)", known as Christian Doctrine Fathers and a congregation for women originally called "Daughters of Christian Doctrine", which later came to be called the "Ursulines", which died out in the 17th century. Pope Pius VII declared César de Bus venerable in 1821 and Pope Paul VI beatified him in Rome on 27 April 1975. On 27 May 2020 Pope Francis issued a decree via the Congregation for the Causes of Saints approving a miracle and hence clearing the way for de Bus to be proclaimed a saint; he will be canonized on 15 May 2022.