Historia Brittonum
of Nennius
J.A. Giles translation

III.--THE HISTORY.

4.-5. From Adam to the flood, are two thousand and forty-two years.  From the flood to Abraham, nine hundred and forty-two.  From Abraham to Moses, six hundred.  From Moses to Solomon, and the first building of the temple, four hundred and forty-eight.  From Solomon to the rebuilding of the temple, which was under Darius, king of the Persians, six hundred and twelve years are computed.  From Darius to the ministry of our Lord Jesus Christ, and to the fifteenth year of the emperor Tiberius, are five hundred and forty-eight years.  From the passion of Christ are completed nine hundred and forty-six; from his incarnation, nine hundred and seventy-six; being the fifth year of Edmund, king of the Angles.

6.  The first age of the world is from Adam to Noah; the second from Noah to Abraham; the third from Abraham to David; the fourth from David to Daniel; the fifth to John the Baptist; the sixth from John to the judgment, when our Lord Jesus Christ will come to judge the living and the dead, and the world by fire.
 
The first Julius.  The second Claudius.  The third Severus.  The fourth Carinus.  The fifth Constantius.  The sixth Maximus.  The seventh Maximianus.  The eighth another Severus Æquantius.  The ninth Constantius.
 
Here beginneth the history of the Britons, edited by Mark the anchorite, a holy bishop of that people.

7.  The island of Britain derives its name from Brutus, a Roman consul.  Taken from the southwest point it inclines a little towards the west, and to its northern extremity measures eight hundred miles, and is in breadth two hundred.  It contains thirty-three cities, viz.
 1.   Cair ebrauc  (York)
 2.   Cair ceint  (Canterbury)
 3.   Cair gurcoc  (Anglesey?)
 4.   Cair guorthegern  (unknown)
 5.   Cair custeint  (Carnarvon)
 6.   Cair guoranegon  (Worcester)
 7.   Cair segeint  (Silchester)
 8.   Cair guin truis  (Norwich, or Winwick)
 9.   Cair merdin  (Caermarthen)
 10. Cair peris  (Porchester)
 11. Cair lion  (Caerleon-upon-Usk)
 12. Cair mencipit  (Verulam)
 13. Cair caratauc  (Catterick)
 14. Cair ceri  (Cirenchester)
 15. Cair gloui  (Gloucester)
 16. Cair luilid  (Carlisle)
 17. Cair grant  (Grantchester, now Cambridge)
 18. Cair daun  (Doncaster), or Cair dauri  (Dorchester)
 19. Cair britoc  (Bristol)
 20. Cair meguaid  (Meivod)
 21. Cair mauiguid  (Manchester)
 22. Cair ligion  (Chester)
 23. Cair guent  (Winchester, or Caerwent in Monmouthshire)
 24. Cair collon  (Colchester, or St. Colon in Cornwall)
 25. Cair londein  (London)
 26. Cair guorcon  (Worren, or Woran, in Pembrokeshire)
 27. Cair lerion  (Leicester)
 28. Cair draithou  (Drayton)
 29. Cair pensavelcoit  (Pevensey, in Sussex)
 30. Cair teim  (Teyn-Grace, in Devonshire)
 31. Cair Urnahc  (Wroxeter, in Shropshire)
 32. Cair celemion  (Camalet, in Somersetshire)
 33. Cair loit coit  (Lincoln)

These are the names of the ancient cities of the island of Britain.  It has also a vast many promontories, and castles innumerable, built of brick and stone.  Its inhabitants consist of four different people; the Scots, the Picts, the Saxons, and the ancient Britons.

8.  Three considerable islands belong to it; one, on the south, opposite the Armorican shore, called Wight; another between Ireland and Britain, called Eubonia or Man; and another directly north, beyond the Picts, named Orkney; and hence it was anciently a proverbial expression, in reference to its kings and rulers, "He reigned over Britain and its three islands."

9. It is fertilized by several rivers, which traverse it in all directions, to the east and west, to the south and north; but there are two preeminently distinguished among the rest, the Thames and the Severn, which formerly, like the two arms of Britain, bore the ships employed in the conveyance of the riches acquired by commerce.  The Britons were once very populous, and exercised extensive dominion from sea to sea.