The main part of this book consists of an edition of an early eighteenth-century copy by P. Laporte of two medieval manuscripts that no longer survive. The first was drawn up at the end of the thirteenth or the early years of the fourteenth century; the second was copied sometime after 1323–6. The manuscripts were probably burned in the great fire of 1793, leaving Laporte's copy as the sole surviving insight into the liturgical life of the Narbonne chapter. He preserved Toulouse, Bibliotheque municipale, ms 623, a list of those martyrs who were remembered each day in masses at Narbonne cathedral, and also a much longer list of those who made arrangements in their wills for masses to be said on the anniversaries of their deaths. The majority of those who featured in the second list had been canons of the cathedral, but some laymen did donate. The modern editors have also provided a brief list of those commemorated at the church of St-Etienne in Narbonne, and an invaluable summary of the cathedral chapter's statutes, drawn up in the early sixteenth century. They crown their achievement by listing and offering brief lives of the successive archbishops of Narbonne from the ninth century until 1719. Given the absence of other information about the cathedral, this is a treasure trove.