Historians assert, that the Belgæ[a], or Attrebatii, a people of Gaul, were the first emigrants who settled in the Southern parts of this island long before the Roman eagle was advanced hither. Little can be learned relating to them or the ancient Britons before Cæsar's invasion, which was fifty three or fifty four years before Christ. About that time, we learn, that the kingdom of the Iceni, whose inhabitants were called Cenimagni, comprehended the counties of Norfolk, Suffolk, Cambridge, and Huntingdon, and that they, with other kingdoms in this island, submitted by their ambassadors to Cæsar; and that afterwards, in order to keep the people in subjection, the proprætor Ostorius Scapula, who was sent hither about the year of Christ 47[b], established garrisons, and disarmed the suspected people in various parts of the island [c].