This is the first British proper name. The next is that of the _Trinobantes_--beginning with the common Keltic prefix (_tre_-) meaning _place_. Imanuentius, the king, had been slain in some previous act of aggression by Cassibelaunus, and his son Mandubratius had fled to Cæsar whilst in Gaul. He is now restored upon giving hostages. In the list which follows of the population who sent hostages to Cæsar, we find the name of the _Cassi_; which suggests the notion of Cassibelaunus' own subjects have become unfaithful to him. The others are Cenimagni, the Segontiaci, the Ancalites, and the Bibroci. Cæsar seems now to be in Hertfordshire, west of London, _i.e._, about Cassio-bury, the stockaded village, or head-quarters, of Cassibelaunus--Cassibelaunus himself being in Kent. Here he succeeds in exciting four chiefs, Cingetorix (observe the Keltic termination, -_orix_), Carvilius, Taximagulus, and Segonax, to attack the ships; in which attempt they are repulsed with the loss of one of their principal men, Lugot-_orix_. The campaign ends in Cæsar coming to terms with Cassibelaunus, forbidding any attacks during his absence on Mandubratius and the Trinobantes, and returning to Gaul with hostages. From an incidental notice of the British boats in a different part of Cæsar's books, we learn that those on the Thames, like those on the Severn, were made of wicker-work and hides--_coracles_ in short; and from a passage of Avienus we learn that the Severn boats were like those of the Thames-- Non hi carinas quippe pinu texere Acereve norunt, non abiete, ut usus est, Curvant faselos; sed rei ad miraculum Navigia juncta semper aptant pellibus, Corioque vastum sæpe percurrunt salum. Cæsar's conquest was to all intents and purposes no conquest at all. Nevertheless, Augustus received British ambassadors, and, perhaps, a nominal tribute. Probably, this was on the strength of the dependence of the Eastern Britons on some portion of Gaul. At any rate, there was no invasion. [Sidenote: A.D. 20 to 43.] The latter part of the reign of Tiberius, and the short one of Caligula, give us the palmy period for native Britain--the reign of Cynobelin, the father of Caractacus, the last of her independent kings.