Arthur, or Arthwys, seems to have been the son of Uthyr, and Emrys, whom he succeeded, bearing the title of Pendragon in his own tongue, and of Imperator in Latin, which was the language of politics to the Britons.  A Silurian like Caradwg, his spirit was the same, and his hereditary possessions would seem to have been on the Welsh border, with Caerleon on Uske for their capital; but he was born at Tintagel in Cornwall, and he was prompt in flying to the aid of the British cause in all quarters.  The West Saxons were his chief enemies, and his battles, twelve in number, are almost all in the kingdom of Wessex; but he must also have been acknowledged by the northern Britons of the old province of Valentia, and have ruled over "fair Strathclyde and Reged wide" from his fortress at Carlisle.  After a brave reign of forty years, he at length perished through the treachery of his nephew; but whether his last fatal battle was fought in Strathclyde, Cornwall, or in Somerset, it seems impossible to determine. 
    The Cymry mourned passionately.  The Welsh bards made Triads, and the Armoricans sang songs. (History of Christian Names, Yonge, 1884)