Colchester is rich in Roman relics also, to be found stored in museums, and in the form of Roman bricks and tiles built into the walls of the Norman keep to the north of the High Street, and into the ruined walls of St. Botolph's Priory Church, to the south-east of the town. This same keep, the largest in England, was probably built by Eudo, high steward to William the Conqueror, possibly on the site of the temple of Claudius, but as to that there can be no assurance. What is certain is that much Roman material was incorporated in the rubble of which the very solid walls are made; and this is natural enough when we reflect that Colchester was a real Roman colony for nearly 350 years. The most interesting objects in the Museum, which is housed in the ancient chapel of the castle, are a curious sphinx, two feet high, with the wings of a bird, the breasts of a bitch, the head of a woman, and the paws of a lion, squatting over the lacerated carcase of its human prey; the famous Colchester vase and a bust of Caligula, and there have been a number of smaller "finds." Colchester is no doubt derived from _Colonia_ and _castrum_, but it has a legendary connection with King Cole of happy memory, and the principal bastion in Balcon Lane is still known as Colking's Castle. The theory of the Britons, to summarize first and to quote later a _Quarterly_ Reviewer, was that the descendants of Cunobelin continued in Colchester under the Romans, and that one of them was Coilus, _alias_ Cole, the same music and liquor-loving potentate who called for his pipe a good many centuries before the uses of the soothing herb were known in this country; of course, his pipe may have been an instrument of so-called music. After the usurpation of Carausius and his successor, Cole or Coel, Duke of Kaer-Coloin (Colchester), surrendered the island to the Romans, "in return for which service he was allowed to retain the nominal sovereignty in Britain, and has become renowned as the 'Old King Cole' of popular song. On his dying soon afterwards, the British legends went on to declare that Constantius the Senator, the representative of the Roman power on the island, received the crown of Coel, but only in virtue of marriage with his daughter Helena; and Colchester has hence enjoyed the reputation of giving birth to Constantine, the first Christian Emperor. There is no trace, however, of Constantius having been in Britain at all before the year 296, at which time his son was twenty-four years old; and the most credible writers assert that his consort was not a Briton, but a Bithynian. We leave the good citizens of Colchester in possession of their arms 'a cross intagled between four crowns,' in token of Helena's invention of the Cross of Christ; but we cannot allow that they have any historical title to them."