‘Defending English Ground: the Crisis of Lordship in early Tudor Northumberland’

Maureen Meikle, A British frontier? Lairds and Gentlemen in the eastern Anglo-Scottish Frontier, 1540-1603 (2004); M.E. James, Society, Politics and Culture: studies in early modern England (1986);
S.G. Ellis, Defending English Ground: War and Peace in Meath and Northumberland (2015)