Clement of Llanthony’s twelfth-century Latin gospel harmony is an important British witness to the tradition of producing a continuous narrative from the four gospels that is almost as old as the gospels themselves. Close analysis of the text reveals that Clement’s harmony has no demonstrable links with the Tatianic Diatessaron tradition exemplified in the Codex Fuldensis but, rather, is possibly the earliest attempt to construct a life of Christ from Augustine’s treatise De Consensu Evangelistarum, which was written to prove the ‘harmony’ of the gospel accounts as a defence against those who pointed out their apparent contradictions.
J. Rendel Harris‘The Gospel Harmony of Clement of Llanthony,’Journal of Biblical Literature93 (1924) 349–362. The manuscript is Durham Cathedral ms A.I. See Beryl Smalley ‘Which William of Nottingham?’ Medieval and Renaissance Studies 3 (1954) 200–238 there 209–210.