Saint Gregory was from Agrigentum in Sicily. After being ordained as a reader, at age 18 he made a pilgrimage to Jerusalem, where he was ordained a deacon by the patriarch. After more travels, he returned to Agrigentum where he was consecrated as bishop. He struggled against many temptations and attained great holiness. A pair of jealous priests slandered Gregory to the Pope, who imprisoned him for two and a half years. But when he was faced with a harlot who accused him of fornication with her, he was vindicated when he cast a demon out of her. The saint reposed in peace in the sixth century. His feast is celebrated on November 23.