Giovannangelo Porro was a 15th-century Italian priest and hermit belonging to the Servite Order. Born into a noble family in Barlassina, he entered the religious life following his father's death. He spent much of his life practicing intense meditation and penitential acts, including fasting and self-mortification, while living in various convents located in Florence and Milan. He died in Milan in 1505, leaving behind a legacy of deep spiritual devotion and local veneration.