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German Franciscan historian and researcher. Entering the Order in 1933, he received his doctorate in Cologne (1947), lecturing and publishing on Franciscan literature, religious life and history during the rest of his career. A member of the Collegio S. Bonaventura at Grottaferrata (1967-77), he published important editions and studies of the writings of Francis.
Spicilegium Bonaventurianum, 1963 seqq. In 8° mai.
A variety of scholarly research: archival research into aspects of Assisi's city life and 15th/16th c. Italian universities; works on Franciscan manuscripts in Naples and Troyes; editions of works by scholastic authors Francis of the Marches, Nicholas of Ockham, Peter Lombard, William of Auxerre; critical editions of spiritual and writings of Francis of Assisi (also in Italian and Spanish translation), Angela of Foligno, Hugh of Digne, and Rudolf of Biberach.