The Mongol Empire & its relations with the Catholic West; the Crusades & the Latin East; & the eastern Islamic world in the Middle Ages.
- Seminar für Lateinische Philologie des Mittelalters und der Neuzeit, Heidelberg University
The archaeology of Wales and Ireland c. AD400-1150; early medieval inscribed stones and stone sculpture and the archaeology of the church; antiquarians and Welsh archaeology
History, theory, and analysis of 13th- and 14th-century music; music and French poetry in the same period; themes of love, violence, gender, and sexuality
Medieval legal history; medieval historical writing; nineteenth-century scholarship on legal history, especially the work of F W Maitland