Dr. Arias

Joseph M. Arias, Assistant Professor of Theology, Dean of Students
S.T.D., The Catholic University of America                
S.T.L., S.T.B., Pontifical Faculty of the Immaculate Conception, Dominican House of Studies
M.A., Christendom College
B.A., Loyola Marymount University


Dr. Arias is the faculty advisor for students concentrating in moral theology.  In addition to teaching at the Graduate School, Dr. Arias is an adjunct member of the undergraduate faculty at Christendom College. He also serves as the curator of the Graduate School library. He has presented scholarly papers at meetings of The Research Center for Biblical Thomism at Nicolaus Copernicus University, Torun, Poland, the Thomas Instituut te Utrecht, Netherlands, the Mariological Society of America, the Fellowship of Catholic Scholars, and the International Association for the Philosophy of Law and Social Philosophy, among others. Dr. Arias has published articles in the National Catholic Bioethics Quarterly, The Linacre Quarterly: The Journal of the Catholic Medical Association, Homiletic & Pastoral Review, and Crisis Magazine.

Salvatore J. Ciresi, Lecturer in Theology
M.A., Christendom College
B.A., Strayer University


Professor Ciresi is the founder and director of the St. Jerome Biblical Guild, an educational apostolate that promotes the study of Scripture within a theological and practical framework.  He is also the publisher of Veritas Scripturae, an international online Scripture journal. He was a diocesan consultant for the revision of the National Directory for Catechesis, and he writes a regular Scripture column for The Latin Mass magazine.  Ciresi is a former host of the Catholic radio show CrossTalk and has a special interest in the doctrine of Biblical inerrancy.

Dr. RJ Matava

Robert J. Matava, Associate Professor of Theology, Dean of the Graduate School
Ph.D., University of St. Andrews, Scotland
M.A., Pontifical Faculty of the Immaculate Conception, Dominican House of Studies (Washington, DC)
B.A., Mount St. Mary’s University


Dr. Matava’s work lies at the juncture of Christian doctrine, philosophical theology, and moral theory. He is the author of Divine Causality and Human Free Choice: Domingo Báñez, Physical Premotion and the Controversy de Auxiliis Revisited (Brill, 2016). He was the Liddon Fellow in Theology at Keble College, University of Oxford, and a fellow of the Center for Medieval Philosophy at Georgetown University. He received the Founder’s Award from the Society for Medieval and Renaissance Philosophy in 2009. Dr. Matava has published essays in Studies in Christian Ethics and Cuadernos de pensamiento Español. He has delivered scholarly papers at Oxford, Aberdeen, St. Andrews, Navarre, and Notre Dame.

Dr. Andrew Montanaro

Andrew Montanaro, Assistant Professor
Ph.D., The Catholic University of America
M.A., The Catholic University of America
B.S., Rochester Institute of Technology


Dr. Montanaro’s research interests center on biblical theology, the internalization and textual transmission of Sacred Scripture, and its use in pedagogy and formation. At Christendom, he teaches classes in Sacred Scripture. He has facility in Greek, Hebrew, and Akkadian, as well as other ancient languages. Dr. Montanaro has published in Novum Testamentum. He has also presented scholarly papers at the Universidad Católica Argentina, The Catholic University of America, and the University of Toronto. His dissertation explored models of family and formation in Sirach. He is a member of the Society of Biblical Literature and the Catholic Biblical Association.

Fr. Brian Mullady, O.P., Lecturer in Theology
S.T.L. and S.T.D., Pontifical University of St. Thomas Aquinas, Rome
M.A., B.A., St. Albert’s College, Oakland, CA


Fr. Brian Mullady is an adjunct professor at Holy Apostles College and Seminary, one of the founders of their Distance Learning program, and a retreat and mission preacher.  He is a specialist in Moral Theology and has written three books and has numerous CD lectures.  He is a regular on EWTN and writes the question and answer column in Homiletic and Pastoral Review.  He is a specialist on questions of nature and grace and in the thought of Thomas Aquinas.  He is a member of the Fellowship of Catholic Scholars and an academician in the Catholic Academy of Sciences as well as staff theologian for the Institute of Religious Life.

Rev. Thomas W. Nelson, O.Praem.,  Lecturer in Theology of Consecrated Life
S.T.L., M.A., S.T.B., Ph.B., Pontifical University of St. Thomas Aquinas, Rome


Fr. Thomas Nelson, O.Praem.,  is a Norbertine priest of St. Michael’s Abbey in Orange, California. He is the Director of Formation at St. Michael’s Abbey and a lecturer in philosophy and spirituality in their Studium. He is the National Director of the Institute on Religious Life, and the Director of the Vita Consecrata Institute.

Donald S. Prudlo, Associate Professor of Theology and Church History
Ph.D., University of Virginia
M.A., B.A., Christendom College

Dr. Prudlo holds the Warren Chair of Catholic Studies at the University of Tulsa.  Formerly, he was Professor of Ancient and Medieval History at Jacksonville State University in Alabama. He is the author of Certain Sainthood: The Origins of Papal Infallibility in Canonization, The Martyred Inquisitor: The Life and Cult of Peter of Verona (†1252), Thomas Aquinas: A Historical Portrait, and several edited volumes, in addition to many articles and chapters on such topics as hagiography, historical theology, and Church history.  He has completed editions of several medieval texts and translations. He is currently writing a book on the history of the early Dominican Order and cooperating on an edition and commentary of the lives of St. Omobono of Cremona. His specialties include Church History, Hagiography, and Historical and Sacramental theology. He serves as a commentator for canonizations on Vatican Radio, is on the editorial board of Truth and Charity Forum.

David Wallace, Lecturer in Evangelization and Catechesis
M.A., B.A., Christendom College


Professor Wallace has been involved in various educational and catechetical apostolates in the Diocese of Arlington since 2007, including curriculum development, course writing, and serving as a parish director of religious education. He has lived abroad, studying in Germany and Italy. His academic interests include liturgical theology, early patristic catechetical writings, and Sacred Scripture.

Prof. Weidenkopf headshot

Steve Weidenkopf

M.A., Christendom College
B.A., Syracuse University

Professor Weidenkopf is the author of The Church and the Middle Ages: Cathedrals, Crusades, and the Papacy in Exile (1000-1378) (2020), Timeless: A History of the Catholic Church (2019), The Real Story of Catholic History: Answering Twenty Centuries of Anti-Catholic Myths (2017), The Glory of the Crusades (2014), and The Reformation (2017): A Catholic Answers “20 Answers Series” booklet. He is the creator, co-author, and presenter of Epic: A Journey through Church History – a 20 session parish-based study published by Ascension Press (2009) and the author and presenter of The Early Church, a 10 session program on the first 500 years of Church history also available from Ascension Press (2012). He is a member of the Society for the Study of the Crusades and the Latin East – an international academic group dedicated to the field of crusading history and is also a Knight of the Equestrian Order of the Holy Sepulchre of Jerusalem. Prof. Weidenkopf has appeared as a guest to discuss Church History on numerous national Catholic radio and television programs including EWTN Live and Catholic Answers Live.

Rev. Norbert J. Wood, O.Praem., Lecturer in Theology of the Consecrated Life
M.Ed.Admin., University of San Francisco
3 years post-graduate liturgical studies, Pontificio Istituto Liturgico di Sant’Anselmo, Rome
S.T.B., Pontifical University of St. Thomas Aquinas, Rome


Fr. Norbert is the Rector of St. John the Baptist Parish Elementary School in Costa Mesa, CA, and Sunday chaplain to the boys at Joplin Juvenile Detention Center in Trabuco Canyon, CA. He has spent twenty-five years in Catholic education, primarily on the secondary level, as teacher, principal and administrator. He is a summer professor at the Vita Consecrata Institute, and he preaches retreats to priests, religious and laity in the US, Canada, India, Australia and the Philippines.

Administrative Staff

Dean of the Graduate School: Robert J. Matava, Ph.D.

Registrar/Business Officer: Olivia Colville, M.A.

Administrative Assistant/Admissions Officer: Annie Adams, B.A.

Classroom Technician/Library Assistant: Mary Strickland, B.A.

To view current job openings, please visit Christendom’s Employment Opportunities page.

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