Bangor-Iscoed, the Bovium, and, at a later period, the Banchorium, of the Romans, is situated on the river Dee, some fourteen miles south of Chester. Sharon Turner laments the destruction of its magnificent library at the sacking of the monastery, which he regarded as an "irreparable loss to the ancient British antiquities." Gildas, the quasi-historian, is said to have been one of its abbots. The Brit-Welsh commander during this struggle was Brocmail, the friend of Taliesin, who, in his poem on the disastrous battle, says-- I saw the oppression of the tumult; the wrath and tribulation; The blades gleaming on the bright helmets; The battle against the lord of fame, in the dales of Hafren; Against Brocvail[10] of Powys, who loved my muse. Sharon Turner says the precise date of this battle is uncertain. The Anglo-Saxon chronicle says it was fought in the year 607, and the Annals of Ulster in 612. Other authorities assign dates between the two. The Rev, John Whitaker seems to have had not only a perfect faith in the historical existence of Arthur, but also of his famous knights of the "table round." Following tradition he locates at Castle-field, Manchester, the legendary fortress of "Sir Tarquin," a gigantic hero, to whose prowess several of Arthur's doughty knights had succumbed, before he himself fell beneath the stalwart arm of "Sir Lancelot du Lake." Whitaker regards Lancelot's patronymic, "du Lake," as referable to the Linius which gave the name to the district, according to the hypothesis previously advanced. It is scarcely necessary to say that, notwithstanding all this ingenuity, Sir Tarquin, Sir Lancelot, and their knightly compeers, are as much creatures of the imagination as the heroes of any acknowledged work of fiction, such as the "Iliad" and the "Odyssey" of Homer, or the novels of Scott, Thackeray, Lord Lytton, and Dickens.