- Emeritus Professor of History, Jawaharlal Nehru University, New Delhi
The political, economic, religious and social history of the Mediterranean in the late Middle Ages, especially Italy and Spain; attitudes in late medieval Europe to non-Christian religions and peoples
The Mongol Empire & its relations with the Catholic West; the Crusades & the Latin East; & the eastern Islamic world in the Middle Ages.
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