sentences:  Here he at first taught canon law privately and later on became a public professor, a position he held for three years.Called to Avignon in 1304 he retained the dignity of archdeacon, held the office of papal chaplain, and also served in the Apostolic chancery until his death.During the brief pontificate of Pope Benedict XI (1303-1304) he wrote an accurate and complete, but rather diffuse, commentary on the "Liber sextus".. His stay at Avignon was marked by a "Tractatus super haeresi et aliis criminibus in causa Templariorum et D. Bonifacii".