The Lindisfarne Gospels are presumed to be the work of a monk named Eadfrith, who became Bishop of Lindisfarne in 698 and died in 721. Current scholarship indicates a date around 715, and it is believed they were produced in honour of St. Cuthbert. However, some parts of the manuscript were left unfinished so it is likely that Eadfrith was still working on it at his time of death. It is also possible that he produced them prior to 698, in order to commemorate the elevation of Cuthbert's relics in that year, which is also thought to have been the occasion for which the St Cuthbert Gospel (also British Library) was produced. The Gospels are richly illustrated in the insular style and were originally encased in a fine leather treasure binding covered with jewels and metals made by Billfrith the Anchorite in the 8th century. During the Viking raids on Lindisfarne this jewelled cover was lost and a replacement was made in 1852. The text is written in insular script, and is the best documented and most complete insular manuscript of the period.