Marcellino D'Ambrosio is a world-renowned commentator on religious issues. With a Ph.D. in theology (under Avery Cardinal Dulles), nine years of university teaching, and hundreds of published articles, Marcellino has a wealth of knowledge and knows how to make it accessible for a wide variety of audiences. Known as Dr. Italy, D'Ambrosio has a popular website, Facebook page, and Twitter feed and appears weekly on a variety of Catholic TV and radio networks. He and his wife have five children. His books include When the Church Was Young: Voices of the Early Fathers.