Alnwick was one of three castles held by Lancastrian forces in 1461 and 1462, and it was there that the "only practical defence of a private castle" was made according to military historian D. J. Cathcart King.
Alnwick var den ene af tre slotte, som Huset Lancaster havde i 1461 og 1462, og det var her at det "eneste praktiske forsvar af en privat borg" fandt sted ifølge militærhistoriker D. J. Cathcart King.