PIMSPontifical Institute
of
Mediaeval Studies

Rosemary Williams is currently a Mellon Fellow at the Pontifical Institute of Mediaeval Studies in Toronto, Canada. She completed her PhD in Theology at the University of St Andrews in 2024. Her doctoral thesis was entitled “Dante and Durandus: A Theology of the Liturgy in Poetry” and was supervised by Prof. George Corbett. She additionally holds an M.A.R. in Liturgical Studies from Yale Divinity School, the Institute of Sacred Music Certificate from Yale’s Institute of Sacred Music; and from James Madison University, a B.A. in Interdisciplinary Religion and a B.M. in Clarinet Performance. Her research centers around medieval liturgy and indirect similarity between liturgy, music, and poetry. Her most recent publication, “William Durandus and Liturgies of Reincorporation in Antepurgatory (Purgatorio I-VIII),” appears in «A piè del monte»: revisitando l’Antipurgatorio, edited by Zygmunt G. Barański and Theodore Cachey (Ravenna: Longo, 2025). While at PIMS, she will focus her research on the figure of William Durandus, who remains enigmatic despite his having held substantial political power and having written authoritative texts in the areas of liturgy and canon law.