Pope Gregory XVI (Latin: Gregorius XVI; 18 September 1765 – 1 June 1846), born Bartolomeo Alberto Cappellari EC, reigned from 2 February 1831 to his death in 1846. He had adopted the name Mauro upon entering the religious order of the Camaldolese.Strongly conservative and traditionalist, he opposed democratic and modernising reforms in the Papal States and throughout Europe, seeing them as fronts for revolutionary leftism.