Gion Wallmeyer

Dr. Gion Wallmeyer is a researcher at Bielefeld University’s Department of History, Faculty of History, Philosophy and Theology. He specializes in late medieval political advisors, crusade strategies, and societal change through religious charisma. His work bridges historical analysis with digital humanities, focusing on knowledge networks and epistemic crises in the 13th–14th centuries.

• PhD in Philosophy (2021), University of Duisburg-Essen
• Master’s in History and Philosophy (2014), University of Duisburg-Essen

His research explores how medieval courts navigated uncertainty through expert counsel, with a monograph on crusade plans and co-authored studies on Mediterranean military campaigns. He applies quantitative content analysis and social network methods to archival sources, including hagiographic texts and Venetian diplomatic records.

Recent publications address topics like intention attribution in Occitan societies, Adriatic knowledge exchange, and epistemic rivalries in 14th-century courts. His work is supported by the DFG Research Training Group 1507 and the Center for Uncertainty Studies (CeUS).

Wallmeyer is a member of the Brackwede Working Group for Medieval Research and the DFG Network “The Intention of Others: On the Social Effectiveness of Attributions of Intention in the European Middle Ages.” He received the JB Harley Research Fellowship (2017) and the Essay Prize “Traduire et diffuser” (2023) for his dissertation. His teaching includes courses on pre-modern history and digital humanities methodologies.