Nicholas of Tolentino was a 13th-century Italian Augustinian friar and mystic who lived in Sant'Angelo in Pontano and Tolentino. Following his entry into the Augustinian Order at age 16, he was ordained a priest and became a well-known preacher and confessor. He spent much of his ministry in Tolentino, where he served the poor, visited prisoners, and acted as a peacemaker during local civil conflicts. He is widely recognized for his intense devotion to the souls in Purgatory, a spiritual focus that defined his life and legacy.