English invasion of Scotland (1400) the Solway Firth. As Historian Chris Given-Wilson has put it, 'England's confusion was Scotland's opportunity,' and in May 1399 Wark Castle was destroyed by a Scottish raid. The invasion, then, started being planned alsmost as soon as Henry took the throne. At least one historian has noted a tradition, by then, of newly crowned kings of England launching military campaigns at the beginning of their reigns. Edward III had done so the same year his reign commenced; Richard II immediately on reaching his majority, and Henry V would do so within three years. These campaigns have been summarised as "enforcing...royal
Margery Byset the daughter of a great northern lord", and retained a memory of his face. After she had come to reside with John in the Isles, the contemporary Scottish poet Andrew of Wyntoun tells of her recognition of a man whom she believed to be the deposed king travelling [dressed] as a poor man. Although Richard is widely believed to have starved to death in captivity in Pontefract Castle in early 1400, Margery vouched for the man, whomever he may have been, and the Scots believed her. He was naturally dismissed as an impostor by Henry IV, but had a kind