Catherine E. Clifford is Professor of Systematic and Historical Theology at Saint Paul University, Ottawa.
She holds a Ph.D. in Theology from the University of St. Michael’s College, Toronto, and an STL from the University of Fribourg, Switzerland. Her teaching, research, and publications are in the areas of ecclesiology, ecumenism, and the history of the Second Vatican Council with a particular emphasis on understanding the conversion and renewal of the churches, the development of doctrine, and the unity and diversity of Christian communities. She is presently a member of the Methodist Roman Catholic International Commission. Her publications include The Oxford Handbook on Vatican II (2023), co-edited with Massimo Faggioli, Keys to the Council (2012), co-authored with Richard R. Gaillardetz, and Decoding Vatican II: Interpretation and Ongoing Reception (2014).