Suetonius Divus Claudius 17

He undertook only one expedition, and that was of short duration. The triumphal ornaments decreed him by the senate, he considered as beneath the imperial dignity, and was therefore resolved to have the honour of a real triumph. For this purpose, he selected Britain , which had never been attempted by any one since Julius Caesar, ¹ and was then chafing with rage, because the Romans would not give up some deserters. Accordingly, he set sail from Ostia , but was twice very near being wrecked by the boisterous wind called Circius, ² upon the coast of Liguria , near the islands called Stoechades. ³ Having marched by land from Marseilles to Gessoriacum , ⁴ he thence passed over to Britain , and part of the island submitting to him, within a few days after his arrival, without battle or bloodshed, he returned to Rome in less than six months from the time of his departure, and triumphed in the most solemn manner; ⁵ to witness which, he not only gave leave to governors of provinces to come to Rome , but even to some of the exiles. Among the spoils taken from the enemy, he fixed upon the pediment of his house in the Palatium, a naval crown, in token of his having passed, and, as it were, conquered the Ocean, and had it suspended near the civic crown which was there before. Messalina, his wife, followed his chariot in a covered litter. ⁶ Those who had attained the honour of triumphal ornaments in the same war, rode behind; the rest followed on foot, wearing the robe with the broad stripes. Crassus Frugi was mounted upon a horse richly caparisoned, in a robe embroidered with palm leaves, because this was the second time of his obtaining that honour.