Ten years after this we find the scattered tribes of the Angles and the Frisians occupying the districts on the east coast from the Tees to the Forth, and those who had been the opponents of Arthur in most of these battles, formed into the kingdom of Bernicia by Ida, son of Eobba, in the year 547,[173] who placed his capital on a headland not far from the Tweed, where he erected a fort called in British Dinguardi, or Dinguoaroy, and in Anglic Bebbanburch, afterwards Bamborough. Ida reigned twelve years, and died in 559, when he was succeeded by Ella, who belonged to a different family, and added the districts between the Humber and the Tees, termed Deira, thus forming one kingdom of Northumbria, extending from the Humber as far north as the territory occupied by the Angles reached. The province of Bernicia, however, remained under the rule of Ida’s sons, and it is with this province alone that we are concerned in this work.[174] Ida left twelve sons, six of whom reigned successively over Bernicia, and it is with these sons that the conflict between the Britons and Saxons in the north was continued. Adda, the eldest, reigned seven years, and was followed by Clappa, one year, which brings us to the year 567, when Hussa, the next brother, begins to reign; and we are told that ‘against him four kings of the Britons—Urbgen, Riderchen, Guallauc, and Morcant—fought.’[175] One of their kings, Riderchen, belonged to that party among the Britons who were termed Romans, from their supposed descent either from Roman soldiers or from Roman citizens; the other three to the native or warlike party among the Britons. These seem mainly to have belonged to that part of the nation which occupied the western districts, while the so-called Romans were to be found principally in the central regions. Of the result of this war during Hussa’s reign we are told nothing; but dissensions seem now to have broken out among the Britons themselves, who formed two parties, arising from other grounds besides those of supposed descent. The existence in the country of a pagan people like the Angles, and the extent to which they had subjected the natives, exercised a great influence even over those who were not subject to their power. The Picts, who were either subjected by them or in close alliance with them, were more immediately under their influence, and seem to a great extent to have apostatised from the Christianity introduced among them by St. Ninian, and a great part of the British population in the south fell back upon a half paganism fostered by their bards, who recalled the old traditions of the race before they had been Christianised under the Roman dominion. There was thus a Christian and what may be called a Pagan party. The so-called Romans mainly belonged to the former, and this Riderchen or Rhydderch was at their head. The latter embraced the native Britons, whose leaders traced their descent from Coil Hen, or the aged, and their head was Gwendolew.