and Durham, leading the French, and the men of Galloway, under his cousin Archibald the Grim. Disputes soon arose between the allies, and the French returned home at the end of the year. 1386 saw squabbling between the Earl of Northumberland, and John Neville, 3rd Baron Neville de Raby over the wardenship of the Eastern March. Roger de Clifford, 5th Baron de Clifford, the warden of the Western March, was engaged to keep the peace between the rivals. While Clifford was away from his duties in the west, Douglas accompanied by the Earl of Fife led a force deep into Cumberland, and raided and burnt the town of Cockermouth. Otterburn and death Invasion of England In 1388 Richard II had domestic troubles with his recalcitrant barons and was occupied far to the south, and the time seemed right for invasion to avenge the destruction of 1385. The Scots, following an agreement made between the nobility at Aberdeen, mustered at Jedburgh in August, including the levies of the earls of Fife, March, Moray and those of Archibald the Grim. Upon finding from an English spy, that the English warden Percy was aware of the muster, and was planning a counter strike, the Scots command decided to split the army, with Fife leading the main body into Cumberland, while a smaller mounted force under Douglas was to go east and despoil Northumberland. Douglas' force entered England through Redesdale and proceeded south to Brancepeth laying waste to the countryside. From there the turned east to encircle Newcastle. Newcastle was held by Northumberland's sons, Sir Henry Percy, known as "Hotspur", and his brother Sir Ralph Percy. Northumberland himself remained at Alnwick Castle, hoping to outflank Douglas should he attempt to return to Scotland. The Scots, without the siege equipment to invest the Castle, encamped around it. The week that followed saw constant skirmishes and challenges to single combat between the two sides, that culminated when Douglas challenged Hotspur to a duel. In the ensuing joust Douglas successfully felled Hotspur and was able to capture his pennon. According to Froissart, Douglas announced that he would "carry [the pennon] to Scotland and hoist it on my tower, where it may be seen from afar", to which Hotspur retorted "By God! You will never leave Northumberland alive with that." Battle of Otterburn The following day the Scots struck camp and marched to Ponteland where they destroyed its