Julius Cæsar, the principal source of information respecting ancient Gaul, at the same time that he mentions the Caletes, the inhabitants of the modern Pays de Caux, is altogether silent with regard to the principal city of their territory. From Ptolemy, however, and the Itinerary of Antoninus, it appears, that such city was called _Juliobona_;[147] and, notwithstanding the attempts of Cluvier and Adrien de Valois to establish Dieppe as the site of this Caletian metropolis,[148] the learned of the present day seem unanimously agreed to fix it at Lillebonne; and there are but few who are not also of opinion, that the present French name is a corruption of the ancient Roman one. Some Latin writers of the twelfth century make mention of _Insula Bona_; and the word, _Lillebonne_, spelt, as it not uncommonly is, _L'Ilebonne_, might be regarded as originating from that appellation, of which, indeed, it is a literal translation. But the point is not worth arguing: it is equally possible, that _Insula Bona_ may be no other than _Lillebonne_ latinized. Leaving all discussions of this kind, and equally passing by the attempts which have been made to derive the name of Lillebonne from Celtic roots,[149] it is at least certain, that the place was a Roman settlement; and the undoubted fact of no fewer than five Roman roads branching from it, to different parts of the country,[150] justifies the inference, that it was likewise a settlement of some importance. The subterraneous passages and foundations of ancient buildings, scattered over a wide extent of ground, attest a place of no small size. The remains of a theatre,[151] added to abundance of vases, cinerary urns, sepulchral lamps, and coins and medals, both of the upper and lower empire, which have been from time to time dug up here, prove it to have been occupied by the Romans during a considerable period. But no records remain, either of its greatness or overthrow. It fell, in all probability, in consequence of the irruptions of the northern hordes, and was swept away, like other neighboring towns, "Unknown their arts, and lost their chroniclers."