Jonathan Lyon

"Jonathan Lyon"

Assoc.-Prof. Dr.

Associate Project Investigator  •   CV  •  contact 

Department of History • University of Chicago

Jonathan Lyon is Associate Professor of Medieval History at the University of Chicago. His first book, Princely Brothers and Sisters: The Sibling Bond in German Politics, 1100–1250 (Cornell University Press, 2013), argued that sibling relationships played a pivotal role in shaping political dynamics both inside individual noble families and at the courts of the German kings and emperors. His current project on Church Advocacy and Lordship in the Holy Roman Empire aims to examine interactions between religious communities and their advocates – the secular nobles who exercised judicial authority on their estates – during the Middle Ages. This research project is partially funded by a Lise Meitner Fellowship (Project M 1534-G18) from the Austrian Science Fund (FWF). It complements the VISCOM project by seeking to understand how religious institutions were embedded within local and regional frameworks of territorial lordship.


  • "Noble Lineages, Hausklöster, and Monastic Advocacy in the Twelfth Century: The Garsten Vogtweistum in its Dynastic Context," Mitteilungen des Instituts für Österreichische Geschichtsforschung (2015): 1-29.
  • “Otto of Freising's Tyrants: Church Advocates and Noble Lordship in the Long Twelfth Century,” in Christianity and Culture in the Middle Ages: Essays to Honor John Van Engen, ed. David C. Mengel and Lisa Wolverton (South Bend: University of Notre Dame Press, 2015), 141-167.

Recent Presentations:

  • "Contextualizing Violent Lordship: The Case of the Monastic Advocate in Medieval Germany," given at the Medieval Institute at the University of Notre Dame, Notre Dame, IN, January 23, 2015
  • "Authority & Violence, Lordship & Office Holding: New Perspectives on Some Old Problems," given at Yale University, New Haven, CT, October 16, 2014
  • "Klostervogtei und Herrschaft im Heiligen Römischen Reich: Zwischenergebnisse eines Forschungsprojekts," 163rd Institute Seminar of the Institut für Österreichische Geschichtsforschung, Vienna, Austria, June 2, 2014
  • "Monasteries and Their Advocates / Advocates and Their Monasteries: Community-Building across the Secular-Ecclesiastical Divide," given at the Institute for Medieval Research of the Austrian Academy of Sciences, Vienna, Austria, March 18, 2014
Last Update: 17.07.19