Leonardo Murialdo was a 19th-century Italian priest who dedicated his life to social reform and the education of young men. Born in Turin in 1828, he felt a profound religious calling following a Lenten sermon in Savona. After his ordination in 1851, he worked closely with notable figures like John Bosco to support the impoverished. He is best known for founding the Congregation of Saint Joseph to assist apprentices and laborers, as well as establishing various educational and journalistic initiatives to benefit the working class.