The Catholic University of America

Mark Clark, Ph.D. 
– Associate Professor of Church History
– Historical & Systematic Theology
– Spirituality



Mark J. Clark received his Ph.D. in Medieval History from Columbia University in 2002, where he focused on the Bible and Theology during the Early Scholastic Period. As a Fellow at the Boston College Institute for Medieval Philosophy and Theology Dr. Clark spent two years studying medieval philosophy and theology with Professor Stephen Brown, who taught him how to edit manuscripts. Dr. Clark also holds a J.D. from Duke University (1981) and a B.A. in Economics from the University of Florida (1978).

Before coming to CUA, Dr. Clark taught for six years at Thomas Aquinas College, a Great Books college in Santa Paula, CA, and for five years at Christendom College, where he taught Greek and Latin. Beginning in 2005, he has published a series of articles on Peter Lombard, Peter Comestor, and Stephen Langton, redrawing the theological map of the second half of the twelfth century and moving the starting point of the University of Paris back by several decades. He has numerous articles forthcoming, in which he continues to present ground-breaking research into the authorship and use of the biblical Glossa ordinaria in the mid-twelfth century. He also has a contract with PIMS Press (Medieval Law and Theology Series) to publish five to six books over the next ten years: a monograph (“The Making of the Historia scholastica: 1150-1200”) followed by an edition and translation of the Langton or University Edition of Comestor’s Historia scholastica (in multiple volumes) and also by a final volume containing a critical edition of all three redactions of Langton’s own course on the Historia scholastica. Dr. Clark has also begun to edit Book II of the Summa theologiae of Praepositinus, with a view towards producing a critical edition of the entire work with Professor Stephen Brown of Boston College.


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Contact Information

Phone: 202-319-6520
Fax: 202-319-5704

Areas of Expertise

  • History of Medieval Theology

  • The Bible and Theology in the High Middle Ages

  • The Origins of the University of Paris

  • The Biblical Glossa Ordinaria in the Schools of Paris

Latest Publications

“Le cours d’Étienne Langton sur l’Histoire scolastique de Pierre le Mangeur: le fruit d’une tradition unifiée”, in Pierre de Troyes, dit Pierre le Mangeur, maître du XIIe siècle, éd. G. Dahan. Bibliothèque d'histoire culturelle du moyen âge. (Turnhout: Brepols, 2013), 243-266.

“Peter Comestor’s Historia Genesis and the Biblical Gloss,” Medioevo (forthcoming 2014).

“Faith as a Virtue in the Gospel lectures of Peter Comestor and Stephen Langton.” Archa Verbi Subsidia, ed. Marco Forlivesi, Riccardo Quinto, Münster, Aschendorff (forthcoming, 2014).

“The Glosae super Iohannem, Peter Comestor’s lectures on the Glossed John, Comestor’s Opening Paraphrase of the Historia scholastica, and Langton’s Course on the History: John’s Prologue Revisited,” ed. Fabrizio Amerini, Münster, Aschendorff (forthcoming, 2014).


TRS 220 Church Through the Ages: Paul to Luther

TRS 251 The Dynamics of Christian Spirituality

TRS 461 Christian Theology I

TRS 621C Church History from the High Middle Ages to the Present

TRS 754J Twelfth-Century Mystical Theology

TRS 762 Victorine Theology

TRS 820 Augustine in the Middle Ages: Augustine and Twelfth-Century Spirituality

TRS 823 Bernard and the New Monasticism

TRS 823G The Evangelical Awakening of the Twelfth Century

TRS 824 The Biblical Gloss as Textbook in Peter Comestor's Lectures on the Glossed Gospel's



Course Descriptions


Curriculum Vitae