Henrietta Leyser is an Emeritus Fellow of St Peter's College, Oxford. She shares with Lesley Smith the privilege of having been taught at Oxford by both Beryl Smalley and Richard Southern and many years later of having taught classes of undergraduates together with Lesley. Her main publications are Hermits and the New Monasticism: A Study of Religious Communities in Western Europe, 1000-1150 (1984) and Medieval Women: A Social History of Women in England, 450-1500 (1995).

Robert Sweetman holds the H. Evan Runner Chair in the History of Philosophy at the Institute for Christian Studies in Toronto. He is particularly interested in the interaction of philosophical, theological, pastoral, and mystical modulations of Dominican thought. Currently working to finish a book-length manuscript on the virtues of reason and religion in the thought of Thomas Aquinas, he is also planning out the shape of two further monographs exploring medieval conceptions of love.