Referenced in:

• dec: 220 - Durham, Cathedral Library, A. II. 17, fols. 2-102 (with Cambridge, Magdalene College, Pepys 2981 (19)) (the ‘Durham Gospels’) 220
• dec: 237 - Durham, Cathedral Library, B. II. 30 (the ‘Durham Cassiodorus’) 225 and n. 42