[Footnote 5: The following is the substance of Offa’s war with the Britons, as collected from Speed’s Chronicle. Their king at this period was Marmodius. The West-Saxons, in their struggles with Offa, had found in Marmodius an ally. On the discomfiture of Kenwolfe, (k. of W. S.) Offa marched to the borders of Wales. Previous letters and explanations had passed between the two monarchs, and the negociations were still, by the artifice of Marmodius, prolonged. “A stratagem (in the words of our authority) to protract time, and work upon advantage.” In this interim of compliments the Mercian king built a fortified dyke or ditch, commencing at Basingwark in Flintshire, and ending near Bristow at the fall of the Wye, and forming, in its utmost length, a barrier of about one hundred miles between the two kingdoms. “Marmodius, who openly bare saile to this wind, and seemed to winke at Offa’s intent, secretly called a council of state, wherein he declared how the act there in working would soon prove the bane of liberty unto their country, and the marke of dishonour to themselves and posterity for ever, therefore his advice was that by some stratagem it might be staid by time.” Accordingly, having secretly collected their allies the Saxons “both of the South, West, and North, upon St. Stephen’s day, at night, they suddenly brake down the banke of this fortification, filling up again great part of the ditch, and in the morning most furiously rushed into Offa his court, putting a great number to the sword who were more intent and regardful to the feast than to any defence from their cruel and merciless swords.” The effect of this successful stratagem was a short superiority on the side of the Britons. Offa’s army was routed, and himself in imminent danger. But his return was speedy, and his revenge decisive. He made their hostages his vassals and slaves, and entering Wales with a large army, conquered Marmodius, “and all his associates in the field.” Mr. Hutton, who examined the remains of Offa’s dyke in 1803, says “the traveller would pass it unheeded if not pointed out. All that remains is a small hollow which runs along the cultivated fields, perhaps not eighteen inches deep in the centre, nor of more than twenty yards width.”--_Travels in Wales, 221._ For fuller particulars of Offa’s conquests, see also Matth. Westm. 275-9. Chron. Mailros, 138. Sax. Chron., 61. Bromton, 770. Hen. Huntingdon, 343. Flor. Wig., 778. Hoveden, 409. Sim. Dunelm: 107. 118. Watts’s ed. Matth. Paris, 975. Holinshed, b. 6. ch. 4.]