Tréport is an insignificant fishing-town, situated at the mouth of the small river, the Bresle, near the western extremity of Normandy. But, however unimportant its present state, most writers agree in regarding it as venerable for antiquity, assigning to it an existence coeval with the days of Julius Cæsar. That illustrious general speaks of a harbor, opening into the British Channel, under the denomination of _Ulterior Portus_; and by this name he is supposed to have intended to designate Tréport. The modern Latin historians of France apply the title without scruple: it is even so used in the charter for the foundation of the abbey, dated in the middle of the eleventh century. The very sensible author of the _Description of Upper Normandy_, is, however, of opinion, that such application is not warranted; and, after discussing the subject at some length, he inclines to think it more probable that Tréport may have been termed by the Romans, _Citerior Portus_; though he candidly admits that he finds no mention of a place so called among their writers.[138] The modern name of the town he derives from the Celtic word, _Treiz_; or, as it is sometimes spelt, _Traiz_, _Trais_, or _Treaz_; a word still in use in Lower Brittany, to signify "_the passage of an arm of the sea, or of a river towards its mouth_." According to the same author, there is no reason to believe that Tréport was a place of note, either during the period of the dominion of the Gauls, or of the Romans. From the beginning of the twelfth century, however, it has excited, at different times, a greater or less degree of interest. Various attempts have been made to raise it into commercial importance; and, sunk as it is at present, "it once could boast rows of handsome, well-built streets, a considerable number of inhabitants, and as many as a hundred vessels, fishing-boats included, belonging to the port."--Henry I. one of the earliest Counts of Eu, turned in 1101, the course of the Bresle, so as to bring it more immediately under the walls of Tréport: it was he also who dug the first harbor. Another of the same line of Counts, Charles of Artois, repaired this harbor in 1475, and undertook the greater work of cutting a navigable canal as far as Eu. The task, however, was suspended long before its completion; but the vestiges still remain, and even to the present day pass under the name of the _Canal d'Artois_. In 1154, a fresh attempt was made, and by a far greater man, to raise the prosperity of Tréport. Henry, Duke of Guise, caused a basin to be formed here, capable of containing ships of three hundred tons burthen; and added to it a jetty, defended by strong palisades. The whole was shortly after swept away; nor did better success attend the labors of the celebrated Vauban, who, admiring the situation of the town, undertook, after a lapse of one hundred and thirty-four years, to repair the works of the Duke of Guise.