My research interests range across politics, religion and culture in Capetian France and its neighbours in the 11th and 13th centuries, and my approach is essentially interdisciplinary. I am the author of Abbot Suger of Saint-Denis: Church and State in Early Medieval France, Longman's Medieval World Series, 1998, and Architecture and Society in Normandy, c.1120-c.1270, Yale University Press, 2005, and am now working on a biography of Blanche of Castile. Recent articles and papers have explored aspects of architectural patronage and the impact of ecclesiastical reform on the North French Church in the 12th century. I have a particular interest in questions of cultural identity, in patronage and the representation of power and rulership, and in the cultural impact of ecclesiastical reform.