William Duba, collab. scientifique
  Kinderstube 0.102
Rue de l'Hôpital 4
CH-1700 Fribourg
Tel.: ++41 26 300 90 52


Born in 1970; 1992: BA at Oberlin College (Ohio); 1994: MA in History at the University of Iowa; 2006: Ph.D. in History at the University of Iowa, Thesis Title: Seeing God: Theology, Beatitude and Cognition in the Thirteenth Century; Co-Managing Editor, Vivarium: An International Journal for the Philosophy and Intellectual Life of the Middle Ages and Renaissance. Project Manager, Fragmentarium.


Domaine de recherche:Scotus, Scotism and medieval Franciscan thought; the history of medieval universities; Greeks and Latins in the Middle Ages; Digital Fragmentology.

  • with T. Suarez-Nani (introduction, text), E. Babey (v. 1–2), D. Carron (v. 3), and G. Etzkorn (text), Francisci de Marchia, Quaestiones in secundum librum Sententiarum (Reportatio), v. 1–3, qq. 1–12, qq. 13–27, qq. 28-49 (Ancient and Medieval Philosophy series 3: Francisci de Marchia Opera Philosophica et Theologica), Leuven 2008, 2010, 2012;
  • with Ch. Schabel, Vivarium 47:2–3 (2009), special volume on Geraldus Odonis, also published separately as Geraldus Odonis, Doctor Moralis and Franciscan Minister General, Leiden 2009;
  • with M. Balard, C. Schabel, Actes de Famagouste du notaire génois Lamberto di Sambuceto (décembre 1299–septembre 1300) (Sources et études de l’histoire de Chypre 70), Nicosie 2012;
  • with C. Schabel, Bullarium Hellenicum, Pope Honorius III’s Letters to Frankish Greece and Constantinople (1216–1227) (Mediterranean Nexus 1100–1700 3), Turnhout 2015;
  • Continental Franciscan Quodlibeta after Scotus, in: Theological Quodlibeta in the Middle Ages, vol. 2: The Fourteenth Century, ed. by C. Schabel, Leiden 2007, pp. 569–650;
  • with C. Schabel, Ni chose, ni-non chose. The Sentences Commentary of Himbertus de Garda, OFM, in: Bulletin de Philosophie Médiévale 52 (2011), pp. 149–232;
  • The Souls After Vienne: Franciscan Theologians’ Views on the Plurality of Forms and the Plurality of Souls, ca. 1315–30, in: Philosophical Psychology and the Other Disciplines, ed. by P. J.J.M. Bakker, S.W. de Boer and C. Leijenhorst, Leiden 2012, pp. 171–272;
  • The Legacy of the Bologna studium in Peter Auriol’s Hylomorphism, in: Philosophy and Theology in the Studia of the Religious Orders and at Papal and Royal Courts, ed. by K. Emery, Jr., W. J. Courtenay and S.M. Metzger, Turnhout 2012, pp. 277–302;
  • Three Franciscan Metaphysicians after Scotus: Antonius Andreae, Francis of Marchia, and Nicholas Bonet, in: The Latin Medieval Commentaries on Aristotle’s Metaphysics, ed. by F. Amerini and G. Galuzzo, Leiden 2014, pp. 413–493.
  • Rebuilding the Stemma: Understanding the Manuscript Tradition of Francis of Marchia’s Commentaries on Book II of the Sentences”, Durand of Saint-Pourçain and his Sentences Commentary: Historical, Philosophical, and Theological Issues, ed. A. Speer, F. Retucci, T. Jeschke and G. Guldentops, Leuven: Peeters (Recherches de Théologie et Philosophie Médiévales. Bibliotheca 9), 2014, 119–169.