In 140 years, 850 canons have succeeded each other in Laon. Statistics (conventional and multidimensional) carried out from responses to a computerized questionnaire have shown the extent of geographical recruitment: the popes, who, from the beginning of the fourteenth century, completely replaced the bishop in designating the canons, sent in chapter a high proportion of foreigners to the region (Italians, Quercynois, Limousins...). The chapter of...