On the eastern coast, in what is now Suffolk and Norfolk, was a tribe called the Icenians. This tribe, under Boadicea, the widow of one of its kings, made, in the absence of the Roman governor, Suetonius, raids upon London, Colchester, and other Roman towns. When Suetonius returned, he defeated Boadicea in a battle near London. She killed herself rather than submit. Agricola succeeded Suetonius as governor, and he pushed the Roman Conquest northwards to a line between the Firths of Forth and Clyde. Beyond this line the Romans never made permanent conquests. Along this line Agricola built a chain of forts as a defence of the Roman province against incursions from the northern tribes, and as a base of operations in attempting farther conquests. In a campaign in the year 84, he was opposed by a native force under a chief called Galgacus. A battle was fought amongst the Grampian Hills, near Blairgowrie, with a hardly-won victory to Agricola. It was such a victory as decided him to make the Tay the northern boundary of Roman occupation. But Roman fleets sailed round the northern shores,—planting the Imperial Standard on Orkney,—and returned, having proved that Britain was an island. The northern portion of the island, beyond the line of forts, was then called Caledonia; border fighting was the rule, and the “barbarians from the hills” made frequent raids into the Romanized lowlands. Indeed, not only had the Romans to build a wall connecting the forts of Agricola, but also, as a second line of defence, one between the Tyne and the Solway Firth. The two walls prove the determination of the Romans to maintain their British conquests, and also at what a high rate they estimated the native resistance. In 208, Severus had to re-conquer the country between the walls, restoring that of Agricola, and he carried the Roman eagles to the farthest points north which they ever reached. The remains of Roman roads through Strathearn to Perth, and thence through Forfar, the Mearns, and Aberdeen to the Moray Firth, belong to this period; and they represent attempts to subdue the whole island. Dion, the Roman historian, ascribes the failure of this attempt to the death of Severus at York, in 211. He describes the Caledonians as painting on their skins the forms of animals; of being lightly armed; making rapid dashes in battle; of having no king, only their tribal chieftains. In 305, Constantius defeated the tribes between the walls; they are called in the Roman records, “Caledonians and other Picts;” the latter name being then used for the first time, and as being the more generic appellation. In 360, the Scots are named for the first time. They and the Picts made a descent upon the Roman province, and this is spoken of in terms which imply that they had previously passed the southern wall.