§ 20. But after three years he again appeared with a large army, and three hundred ships, at the mouth of the Thames, where he renewed hostilities. In this attempt many of his soldiers and horses were killed; for the same consul had placed iron pikes in the shallow part of the river, and this having been effected with so much skill and secrecy as to escape the notice of the Roman soldiers, did them considerable injury; thus Cæsar was once more compelled to return without peace or victory. The Romans were, therefore, a third time sent against the Britons; and under the command of Julius, defeated them near a place called Trinovantum [London], forty-seven years before the birth of Christ, and five thousand two hundred and twelve years from the creation.
Julius was the first exercising supreme power over the Romans who invaded Britain: in honour of him the Romans decreed the fifth month to be called after his name. He was assassinated in the Curia, in the ides of March, and Octavius Augustus succeeded to the empire of the world. He was the only emperor who received tribute from the Britons, according to the following verse of Virgil:
"Purpurea intexti tollunt aulæa Britanni."
§ 21. The second after him, who came into Britain, was the emperor Claudius, who reigned forty-seven years after the birth of Christ. He carried with him war and devastation; and, though not without loss of men, he at length conquered Britain. He next sailed to the Orkneys, which he likewise conquered, and afterwards rendered tributary. No tribute was in his time received from the Britons; but it was paid to British emperors. He reigned thirteen years and eight months. His monument is to be seen at Moguntia (among the Lombards), where he died in his way to Rome.
§ 22. After the birth of Christ, one hundred and sixty-seven years, king Lucius, with all the chiefs of the British people, received baptism, in consequence of a legation sent by the Roman emperors and pope Evaristus.[275]
§ 23. Severus was the third emperor who passed the sea to Britain, where, to protect the provinces recovered from barbaric incursions, he ordered a wall and a rampart to be made between the Britons, the Scots, and the Picts, extending across the island from sea to sea, in length one hundred and thirty-three[276] miles: and it is called in the British language, Gwal.[277] Moreover, he ordered it to be made between the Britons, and the Picts and Scots; for the Scots from the west, and the Picts from the north, unanimously made war against the Britons; but were at peace among themselves. Not long after Severus dies in Britain.
§ 24. The fourth was the emperor and tyrant, Carausius, who, incensed at the murder of Severus, passed into Britain, and attended by the leaders of the Roman people, severely avenged upon the chiefs and rulers of the Britons, the cause of Severus.[278]
§ 25. The fifth was Constantius the father of Constantine the Great. He died in Britain; his sepulchre, as it appears by the inscription on his tomb, is still seen near the city named Cair segont (near Carnarvon). Upon the pavement of the above-mentioned city he sowed three seeds of gold, silver, and brass, that no poor person might ever be found in it. It is also called Minmanton.[279]
§ 26. Maximianus[280] was the sixth emperor that ruled in Britain. It was in his time that consuls[281] began, and that the appellation of Cæsar was discontinued: at this period also, St. Martin became celebrated for his virtues and miracles, and held a conversation with him.