 St. Columbanus refused to attend it because the question of the date of Easter (which was to be decided) was dividing Franks and Bretons.A series of councils (most concerned with the privileges of the Abbey of St. Pierre-le-Vif) were held in 657, 669 (or 670), 846, 850, 852, 853, 862, 980, 986, 996, 1048, 1071 and 1080.The council of 1140, according to the letter issued by Archbishop Henri Sanglier, seems to have had no object but to impart solemnity to the exposition of the relics with which he enriched the cathedral.