The town of Warwick is undoubtedly of very ancient origin, and from the earliest period of its existence has been considered the chief town of the shire. It is situated upon a rocky plateau on the north side of the river Avon, and blessed with a dry and fertile soil, with luxuriant meadows on one side and well–wooded and well–cultivated lawns on the other.
It seems not unlikely indeed that Gutherline or Kimberline, one of the British kings who lived in the time of Christ, was the founder of the first settlement at Warwick, and that Guiderius, the former’s son, enlarged the town and bestowed upon it considerable privileges. Originally, according to Rous, it was known as Cær–guthleon, contracted into Cær–leon, derived from Cær, a fortress, and Guthline, the name of its founder.
It was upon the site of an ancient church of All Saints founded by St. Dubritius that the first castle was ultimately built; and about this time that King Vortigern gave his ill–judged invitation to the Saxons, who, arriving nominally to assist him against the Picts and Scots, turned their swords against the nation to whose assistance they had come.
St. Dubritius fled during these disorders to Wales for safety, and abandoned Warwick, his cathedral, and his see to the mercy of the invaders.
One ancient historian gives a vivid description of the rapine and destruction to which the centre of England in general, and Warwick in particular, was at that time subjected. And in his pages one sees the surging hosts of Picts and Scots and Britons and Saxons contending for the mastery of what was, even in those days, one of the most fertile and desirable districts of all England.
Raided, burned, with many of the inhabitants put to the sword, Warwick lay in ruins until the coming of King Warremund, the forbear of the kings of Mercia, who rebuilt the town. Under his rule and that of his descendants the town is stated to have flourished and grown in size and importance until the coming of the Danes.
After some years, in which it once more lay in ruins, Warwick rose phœnix–like from its ashes under the hand of Lady Æthelflæd, daughter of King Alfred the Great and wife of King Æthelred. This princess in the year 915 built the first castle and a fortification called the Dungeon (donjon or keep?), and this building served as a residence of the earls from that date for a century and a half, until the coming of William the Conqueror.
In the early years of William the Conqueror, Turchill, a Saxon, was Earl of Warwick, a man of great power, possessions, and influence; and he it was who was commanded by William the Conqueror to fortify the town more strongly by means of walls and ditches, and to add to and strengthen the existing castle.
A little later King William gave to his Norman favourite Henry de Newburgh the title of Earl of Warwick and a grant of the castle, town, and suburbs, to be held in capite per Servitum Comitatus. The new Earl conferred upon one of his priests one–tenth of his tolls, as an offering for the health of his soul. And Roger de Newburgh, his son, who succeeded him, £4:10s. rent for a similar purpose to his priest.