Mark D. Chapman is Vice-Principal of Ripon College, Cuddesdon and Professor of the History of Modern Theology at the University of Oxford. He is a Church of England priest serving three small rural parishes and Canon Theology of Truro Cathedral. He has written widely on the history of the church and its theology, and also serves as Vice-Chair of the Ecclesiological Investigations International Research Network. Among his recent books are Theology at War and Peace: English Theology and Germany in the First World War (2017) and The Fantasy of Reunion: Anglicans, Catholics and Ecumenism, 1833-1882 (2014).