Xenia von Tippelskirch (PhD in History 2003, European University Institute, Florence) is Professor of the History of Religious Dynamics at Goethe University Frankfurt am Main. In the Winter Term 2025/26, she was a POLY Writing Fellow in the Writing Group "Embodying Christianities." During the group's meetings at Forschungskolleg Humanwissenschaften Bad Homburg in December 2025 and May 2026, she developed her contribution to the first volume of POLY's forthcoming three-volume book project, Doing Christianity: A Praxeological Guide to Polycentricity and Plurality of Premodern Christianities.