Of Arthour and of Merlin, also known as just Arthur and Merlin, is an anonymous Middle English verse romance giving an account of the reigns of Vortigern and Uther Pendragon and the early years of King Arthur's reign, in which the magician Merlin plays a large part. It can claim to be the earliest English Arthurian romance. It exists in two recensions: the first, of nearly 10,000 lines, dates from the second half of the 13th century, and the much-abridged second recension, of about 2000 lines, from the 15th century. The first recension breaks off somewhat inconclusively, and many scholars believe this romance was never completed. Arthur and Merlin's main source is the Estoire de Merlin, a French prose romance. Source: Wikipedia (en)