By the Romani, those leaders of the Britons are meant who were supposed to have derived their descent from the Roman military or civil commanders, as when Gildas tells us that the Britons ‘took arms under Ambrosius Aurelianus as their leader, who was of the Roman nation, and whose parents had been adorned with the purple;’[112] and Nennius, who calls him _Embres Guletic_, says that his father was a consul of the Roman nation.[113] We find also many of the great leaders of the Britons termed _Guledig_, the equivalent of the Latin Imperator, and usually expressed by the epithet Aurelius or Aurelianus; and to them no doubt the great national hero Arthur also belonged, who, according to Nennius, led the kings of the Britons against the Saxons as their Dux Bellorum,[114] and whose actions, so far as they are historical, belong to this part of Britain. Of the last two races, the Brython and the Romani, we have an account in an old document, ‘The Descent of the Men of the North.’[115] Here the Cymry, who occupied the northern districts, are said to be the descendants of Coel Hen, or the aged, whose name is preserved in the central district of Ayrshire, now termed Kyle, and of his son, Ceneu. Their descendants appear to have consisted principally of three tribes. They are thus noticed: ‘Three hundred swords of the tribe of Kynvarch, and three hundred shields of Kynwydyon, and three hundred spears of the tribe of Coel. Whatever object they entered into deeply, that never failed.’ The leader of the tribe of Cynvarch, whose grandfather, Gorust Ledlwm, was either son of Coel or of his son Ceneu, was the celebrated Urien Reged, whom Nennius mentions under the name of Urbgen as fighting against Roderic, son of Ida, the founder of the Anglic kingdom of Bernicia, and known in the Welsh poems by the name of Flamddwyn or the Flamebearer. This tribe appears to have occupied the districts lying between the Northern Wall and the Forth, to which the names of Reged and of Mureif were applied. The second tribe was that of Kynwydyon, whose grandfather Garthwys was grandson of Ceneu. The four sons of Kynwyt Kynwdyon are given as the leaders, two of whom are termed Clydrud Eiddyn and Cadrod Calchvynyd, from which we may infer that this tribe was located partly in the district extending from the Esk to the Avon, in which Duneyddyn or Edinburgh, and Caereiddyn or Caredin, are situated, and partly in the district of which Calchvynyd or Kelso was the chief seat. The latter were probably the people afterwards termed the Tevidalenses. The rest of the descendants of Coel were grouped under the name of Coeling, and extended from the Clyde to Loch Ryan, their principal territories being the districts of Carrawg, Coel, and Canawon, which, under the modern form of Garrick, Kyle, and Cuningham, form the county of Ayr.