The Book of Cerne (Cambridge, Cambridge University Library, MS Ll. 1. 10) is an early ninth-century Insular or Anglo-Saxon Latin personal prayer book with Old English components. It belongs to a group of four such early prayer books, the others being the Royal Prayerbook, the Harleian prayerbook, and the Book of Nunnaminster. It is now commonly believed to have been produced sometime between ca. 820 and 840 CE in the Southumbrian/Mercian region of England. The original book contains a collection of several different texts, including New Testament Gospel excerpts, a selection of prayers and hymns with a version of the Lorica of Laidcenn, an abbreviated or Breviate Psalter, and a text of the Harrowing of Hell liturgical drama, which were combined together to provide a source used for private