Ludovico of Casoria, born Arcangelo Palmentieri, was an Italian Franciscan priest and social reformer who lived from 1814 to 1885. After training as a cabinet maker, he joined the Order of Friars Minor and served as a teacher of philosophy, mathematics, and chemistry in Naples. Following a mystical experience in 1847, he dedicated his life to serving the marginalized by establishing orphanages, schools for former slaves, and institutions for the deaf and mute. He is recognized as a saint in the Catholic Church.