Codex Grandior

The Codex Grandior, or "Larger Codex", was a large single-volume copy of the Bible in Old Latin, made for or by Cassiodorus in the early 500s. It was produced at Vivarium, the monastic foundation Cassiodorus established near Squillace, Italy, alongside a number of other works held there.

In 678, Benedict Biscop or Ceolfrith probably acquired it in Italy for the library of the new monastery at Monkwearmouth-Jarrow in Northumbria. There Bede eventually recognised it as the Codex Grandior, thanks to certain illustrations. The monks regarded a pandect, a single codex containing all the biblical books, as a novelty, and Ceolfrith, as abbot and founder of several monasteries, wanted each of them to have one in a common area open to all the monks.

The book no longer survives, but it is believed to have served as the model for the scribes at Jarrow who produced the Codex Amiatinus, the earliest surviving manuscript of the complete Latin Vulgate.