Leonard of Port Maurice was an 18th-century Italian Franciscan missionary and preacher known for his extensive travels throughout Italy. Born in 1676, he joined the Order of Friars Minor after studying in Rome, choosing a religious life over a career in medicine. He became a highly influential figure in the Catholic Church, earning praise from contemporaries like Alphonsus Liguori for his ability to draw massive crowds during his missions. He spent decades preaching retreats and sermons, often addressing thousands of people in open spaces when churches were too small to hold his listeners.