Originally from England, he studied at Paris and began teaching there early in the second decade of the 13th century, introducing the Sentences of Peter Lombard as a fundamental reference for theological study, writing a Gloss on its content (1227-30). In 1236 he joined the Friars Minor, and later began a Summa of theology, completed by his collaborators after his death in 1245.
Bibliotheca Franciscana Scholastica Medii Aevi, 1957 et seqq. In 8° mai.
This collection offers critical editions of a wide range of Franciscan medieval scholastic texts from such authors as Alexander of Hales, Bonaventure, John Pecham, Peter of John Olivi, Matthew of Aquasparta, Roger Marston, and William of Middleton.