English invasion of Scotland (1400) Edinburgh) where it could maintain contact with its supply fleet. The campaign ultimately accomplished little except to further deplete the king's coffers, and is historically notable only for being the last one led by an English king on Scottish soil. War with Scotland had started under Edward I, cross-border raids and fighting had been the norm in Anglo-Scottish relations since the 1370s, generally in the form of Scottish incursions over the border and English attempts to repel them. The 1399 revolution, which eventually deposed Richard II, created further opportunity for Scotland to regain the land between the River Tweed and
Robert Waterton IV. In 1391 he was appointed Master Forester at Pontefract Castle, and in that year accompanied Bolingbroke to the siege of Vilnius. He was with Bolingbroke when he returned to Vilnius in the following year. From 1392 he received a yearly fee from Bolingbroke of £6 13s 4d, and in 1398 Bolingbroke granted him an additional annuity of 10 marks. In 1399 he was Steward and Constable at Pontefract, as well as Constable at Tickhill Castle and Castle Donnington, positions which 'made him a dominant figure in the West Riding of Yorkshire and in north Nottinghamshire'. He remained in these