The Martyrology of Bede was written about 720; Drepanius Florus, a priest of Lyons, who died 860, added to it considerably, and most of the copies of Bede's Martyrology that we have are those enlarged by Florus. The next martyrologist was Usuardus, monk of Saint-Germain-des-Prés, who died in 876. He wrote his Martyrology at the request of Charles the Bald, who was dissatisfied with the Martyrologies of Jerome and of Bede because they were too short in their narratives, and also because several days in the calendar were left blank. This account, which Usuardus gives in his preface, does not tally with the words of the epistle attributed to S. Jerome that precedes his Martyrology; and leads to the suspicion that this portion of the epistle, at least, is not genuine. Usuardus certainly used the Hieronyman Martyrology as the basis of his work, and this has caused his work to be designated the larger Hieronyman Martyrology. This work of Usuardus was so full, that it displaced the earlier Martyrologies in a great many churches. The best edition of the Martyrology of Usuardus is that of Solerius, Antwerp, 1714-1717. Usuardus was followed by Wandelbert, monk of Prum, who died in 870. Wandelbert followed the Martyrologies of SS. Jerome and Bede, as amplified by Florus, and wrote the notices of the martyrs in hexameter Latin verses. This monument of patience is composed of about 360 metrical pieces, of which each contains the life of the Saint commemorated on the day. To these, which form the bulk of the work, are prefixed others of less importance, prefaces, dedicatory epistles to Lothair, preliminary discourses on the importance of the Martyrology, on the knowledge of times and seasons, months and days, etc. Although Wandelbert wrote for the most part in hexameters, he abandoned them occasionally for lyric metres, which he managed with less facility. D'Achéry published this Martyrology in his "Spicilegium," but the edition is a bad one.