Following the Roman withdrawal from Britain around 410, the location may have been abandoned by the Britons, although the site is usually identified as Cair Grauth listed among the 28 cities of Britain by the History of the Britons. Evidence exists that the invading Anglo-Saxons had begun occupying the area by the end of the century. Their settlement - also on and around Castle Hill - became known as Grantebrycge (“Granta-bridge”). (By Middle English, the settlement’s name had changed to “Cambridge”, and the lower stretches of the Granta changed their name to match.) Anglo-Saxon grave goods have been found in the area. During this period, Cambridge benefited from good trade links across the hard-to-travel fenlands. By the 7th century, the town was less significant and described by Bede as a “little ruined city” containing the burial site of Etheldreda. Cambridge was on the border between the East and Middle Anglian kingdoms and the settlement slowly expanded on both sides of the river. The arrival of the Vikings was recorded in the Anglo-Saxon Chronicle in 875. Viking rule, the Danelaw, had been imposed by 878 Their vigorous trading habits caused the town to grow rapidly. During this period the centre of the town shifted from Castle Hill on the left bank of the river to the area now known as the Quayside on the right bank. After the Viking period, the Saxons enjoyed a return to power, building churches such as St Bene’t’s Church, wharves, merchant houses and a mint, which produced coins with the town’s name abbreviated to “Grant”. In 1068, two years after his conquest of England, William of Normandy built a castle on Castle Hill. Like the rest of the newly conquered kingdom, Cambridge fell under the control of the King and his deputies.