Brian Catlos (Montréal, 1966) earned a PhD in Medieval Studies at the University of Toronto, and currently holds appointments as Professor of Religious Studies at the University of Colorado at Boulder and Research Associate in Humanities at the University of California Santa Cruz. His work centers on Muslim-Christian-Jewish relations and ethno-religious identity in medieval Europe and the Islamic World, and the history of the pre-Modern Mediterranean. A board member of various academic journals, he also co-directs The Mediterranean Seminar, a major initiative and a forum for international and interdisciplinary collaboration in the emerging field of Mediterranean Studies. He has published a number of books and articles including the award-winning, The Victors and the Vanquished: Christians and Muslims of Catalonia and Aragon, 1050–1300 (Cambridge, 2004), Muslims of Medieval Latin Christendom, 1050–ca. 1615 (Cambridge, 2014), and Infidel Kings and Unholy Warriors: Power Faith and Violence in the Age of Crusade and Jihad (Farrar, Straus & Giroux, 2014). Awards and distinctions include the Governor-General of Canada's Gold Medal for Academic Achievement, two National Endowment for the Humanities Research Fellowships, and many other university, national and international fellowships and prizes. In July 2015 he co-directed his fourth four-week NEH Summer Institute for College and University Professors in Barcelona, Spain. Muslims of Medieval Latin Christendom was recently awared MESA's Hourani Book Prize.

He is also a free-lance travel writer and historical consultant, based near Boulder CO and in Barcelona, Spain. In addition to his Rough Guide: Languedoc & Roussillon he contributes chapters and updates for other guidebooks, and provides historical expertise for book and film projects.

News Items
"Historian adds nuance to Mideast religious history" Colorado Arts & Sciences Magazine (June 2014)
News Items
Infidel Kings & Unholy Warriors given Honorable Mention (2015 American Publishers PROSE Awards for Professional and Scholarly Excellence)

• “Religious nationalism finds a footing in the Middle East”: Saturday, 3 January The Washington Post
• Muslims of Medieval Latin Chrstendom awarded MESA's 2014 Albert Hourani Prize
Infidel Kings one of "Five new books on the Middle Ages worth a look!" at medievalists.net
• "A new perspective on the Middle East" on Jeff Schechtman's "Specific Gravity"; aired Friday, October 10, 2014
• "First Impressions #16: Brian Catlos" Marginalia - A Los Angeles Review of Books Channel (Aug 19, 2014)
•  "Historian adds nuance to Mideast religious history" Colorado Arts & Sciences Magazine (June 2014)
• "Muslims of Medieval Latin Christendom," audio interview on New Books in Islamic Studies (July 2014) [stream]
• Cambridge UP ninteenfourteen blog.

Literary Representation


Latest Works

Book Title

Paradoxes of Plurality: Ethno-Religious Identity in the Medieval Mediterranean and Beyond [working title] (Basic Books;)

Traces the emergence of the Modern West from the mutli-religious pre-Modrern Mediterranean to the secular nationalism of the the contemrporary Anglo-European world.

Book Title

The Sea in the Middle: The Mediterranean World 650–1650CE (University of California)

The first undergraduate medieval history survey with a focus on the Mediterranean world. With Mark D. Meyerson (University of Toronto) and Thomas Burman (Notre Dame University). COMING FALL 2018

Book Title

Kingdoms of Faith: A New History of Islamic Spain (Basic Books;)

A fresh look at the hisotry at the Msulims of Medieval Spain, their interaction with and impact on Jewish and Christian society and culture, and the role in the emergence of the modern West. COMING FALL 2017

Infidel Kings and Unholy Warriors: Faith, Power, and Violence in the Age of Crusade and Jihad (Farrar, Straus & Giroux; 2014)
* Honorable mention, 2014 PROSE Award

These case studies of infidel rulers and mercenary paladins reveal the suprising complexities of religious idendtity and the ambiguities of the Muslim-Christian divide in the Age of Crusade (390pp.). Reviews


Muslims of Medieval Latin Christendom, ca. 1050--1614 (Cambridge UP, 2014)
* 2016 Hourani Prize winner (MESA)

The first book-length study of the Muslims of medieval Europe, from the Reconquista to the expulsion of the Moriscos and beyond. Coverage from Spain to Lithuania, Crusader colonies and Muslim slaves, with chapters on ideiology, law, and daily life (628pp.). Reviews

Book Title

Vencedores y vencidos. Cristianos y musulmanes de Cataluña y Aragón, 1050-1300 (Universitat de València, 2010)

The updated Spanish translation of The Victors and the Vanquished (494 pp.). Reviews

Book Title

Worlds of History and Economics.
Essays in Honour of Andrew M. Watson
. (Universitat de València, 2009)

This edited volume collects 13 essays written in honor of the economic historian Andrew Watsion, ranging from studies of Visigothic coinage to Canadian regional economic disparity (263 pp.).

Book Title

The Rough Guide to Langudoc & Roussillon (Rough Guides, 2000-2010)

The completely reivsed 4th edition of this critically-acclaimed guide book, features detailed information on sites, rich cultural and historical information, and up-to-date and critical reviews of restaurants and accommodation (400 pp.).

Book Title

The Victors and the Vanquished. Christians and Muslims of Cataonia and Aragon 1050-1300 (Cambridge UP, 2004)
* Premio del Rey & Fagg Prize (AHA)

A revisionist stiudy of the Muslim minority in Christian Aragon based on detailed archival research and novel methodological approaches (480 pp.). Reviews-

Book Title

Cities of Light.
The Rise and Fall of Islamic Spain
(PBS, 2007)

Featuring interviews with leading scholars and evocative reenactments, this film examines the reiigious diversity of Muslim al-Andalus and its decline. Brian Catlos served as Creative Consultant and appears in interviews. (watch)


“New Approaches to the Study of Muslims in the Medieval West” Scripta Mediterranea (Canadian Institute for Mediterranean Studies) 19/20 (1998/1999).

Twenty-five years on, many of the "new" scholars highlighted here are now established. Includes articles by 22 scholars, including MR Menocal, T Burman, W Granara, and C Burnett. Co-edited with Karla Mallette. ToC


“Pamplona Archivo General MS. A3” in Textos y concordancias electrónicos del Fuero general de Navarra (Hispanic Seminary of Medieval Studies, 1999)

Edition of a 13th-century manuscript of the Fuero General de Navarra.