Pope Celestine V

Pope Celestine V(; 1215 – 19 May 1296), born Pietro Angelerio di Morrone, was an Italian cleric of the Roman Catholic Church and the 193rd Pope for less than six months in 1294.
Celestine V is a saint of the Catholic Church.
Early life.
Pietro Angelerio was born in the Neopolitan province of Moline.
Priest.
In 1232, Angelerio became a Benedictine monk at age 17; and he was later ordained a priest.
Pope.
In July 1294, the monk was elected pope; and in the same year, he abdicated or resigned from his office.
Pope Boniface VIII confined the former pope in the castle of Fumone, and he died there. 
After his death.
In 1313, Celestine was made a saint by Pope Clement V.