Dr. Marcellino D’Ambrosio grew up in Providence, RI, where lots of people had unpronounceable names like his! Now better known online and in TV and radio as “Dr. Italy,” he’s a speaker, author, pilgrimage director and theologian whose initial goals as a teenager had little to do with theology or ministry.
Born into a family of performers, he set his sights on making it big in the music industry, playing bass guitar in one of the leading professional rock bands in New England at age 16. But an encounter with a group of Catholics whose lives were an exciting adventure of faith, something worth really living for, dramatically changed the course of his life. He laid aside his “rock-n-roll” career and embarked on a road that led to a Ph.D. in historical theology from the Catholic University of America, under the guidance of renowned theologian Avery Cardinal Dulles, and his academic career has since included positions at Loyola College, the University of Dallas, and most recently, Catholic International University. His teaching has covered a broad range of subjects from historical, dogmatic, and sacramental theology to evangelization, ecumenism, and Vatican II.
Though “Dr. Italy” expertly covers weighty topics, he brings to his teaching a practical, down-to-earth, and humorous perspective that makes his words easy to understand and enjoyable to hear. He’s served as an expert commentator on religious issues on national news, and is a sought-after guest on a variety of Catholic radio networks such as Relevant Radio, EWTN, and the Sirius Catholic channel. He’s hosted an EWTN series on the Early Church Fathers, and has more recently collaborated with Ascension Press on several of their award-winning book & video studies, including the popular Jesus: The Way, the Truth and the Life series, filmed on location in the Holy Land.
If his teaching, writing, and public appearances weren’t enough to keep him busy, he has also for several decades directed a nonprofit ministry of evangelization and renewal, The Crossroads Initiative. And in 2025 he added “executive producer” to his list of titles, serving in that role for the acclaimed film on St. Maximilian Kolbe, Triumph of the Heart, written and directed by none other than his son, Anthony D’Ambrosio.
“Dr. Italy” is the father of five, grandfather to ten grandchildren and counting, and lives with his wife Susan in the Dallas/Ft. Worth area. Recent and popular titles from Dr. Marcellino D’Ambrosio include: When the White Smoke Clears: A Guide to Pope Leo XIV’s Early Days (contributing author) What We Believe: The Beauty of the Catholic Faith (co-author) Jesus: The Way, The Truth and the Life (author) When the Church Was Young: Voices of the Early Fathers (author) 40 Days, 40 Ways: A New Look at Lent (author).
A few of Dr. Italy’s popular speaking topics include:
The Early Fathers: Who They Are and Why They Matter
Getting More Out of the Mass
Discipleship: The Greatest Adventure
The Meaning of Mercy
Personal Prayer: Pathway to Joy
The Difference the Spirit Makes
The Virtues: 7 Habits of Champions
Mary: Model of Faith
Joseph: Humility and Meekness, not Weakness
Vatican II: The Real Story
Advent: The Reason for the Season
40 Ways, 40 Days: A New Look at Lent
