of the period throw no farther light upon the subject, Lorn and its princes disappear from history, and the success of Angus would appear to have extended not only to the conquest of the province in question, but to the temporary subjection of the entire kingdom of Dalriada.[15] The alliance with Ethelbald the Proud seems to have involved Angus in a collision at different epochs with the West Saxons and the Northumbrians, though a connection of a more friendly nature arose at a later period with the Bernician Eadbert, one of the greatest restorers of the Northumbrian power, the alliance being probably based upon the mutual spoliation of the Britons. The conquests of Ethelfrith in the neighbourhood of Chester, and the victories of Edwin in the south-west of Yorkshire, when he drove Ceretic, or Caradoc, from the forest district of Elmete, appear to have made the first impression upon the lengthened tract of country to the westward of “the Desert,” the true home of the Cymri, extending from the Severn to the Clyde, in which a number of petty princes and kinglets long united in paying some sort of deference to the authority of one supreme king, or _Unben_.[16] The faint remains of a line of defence, dictated possibly by a recollection of imperial tactics, can still be traced towards the north-eastern frontier of this British territory under the name of the _Catrail or Pictswork ditch_, stretching from Peel Fell through the south-western portion of Roxburghshire to Galashiels in Selkirkshire; and to the westward of this barrier the Britons long remained upon a footing of comparative independence, after they had lost all hold upon the more open country in the vicinity.[17] Mercia, at the period of Edwin’s reign, was under the rule of Penda, a chieftain who, to a hatred and contempt of Christianity, joined an ardent desire of shaking off his dependence upon the kindred Angles beyond the Humber, and encouraging the designs of the British princes against the conqueror of Caradoc, he united the pagan warriors of Mercia with the Christian followers of Caswallon, re-establishing the supremacy of the Britons over the ancient city of York, by the defeat and death of Edwin, though the triumph was purchased at the price of the temporary extinction of Christianity. But the alliance between Christian and pagan was of evil omen, and the death of Caswallon in the following year destroyed the hopes of the Britons, though they again swelled the forces of the heathen Penda, when he lost his life near the Broad Arc, Cadwal of Gwynneth alone escaping from the field. Cadwallader, the last king whose authority is supposed to have been supreme, died of the pestilence in 664; and towards the close of the same century the conquests of Egfred extended the Northumbrian dominions to the western coast, and with his numerous donations of lands in the modern counties of Lancashire and Cumberland to the Northumbrian clergy, interposed a permanent barrier between the Britons