Pope Celestine V
Pope Celestine V (; 1215 – 19 May 1296), born Pietro Angelerio (according to some sources "Angelario", "Angelieri", "Angelliero", or "Angeleri"), also known as Pietro da Morrone, Peter of Morrone, and Peter Celestine, was head of the Catholic Church and ruler of the Papal States for five months from 5 July to 13 December 1294, when he resigned. He was also a monk and hermit who founded the order of the Celestines as a branch of the Benedictine order.