Under Castle Walls is a historical fiction novel written by Henry Christopher Bailey and published in 1906. The story is set in medieval England and follows the life of a young knight named Sir Richard de Cantilupe. Sir Richard is a loyal servant of King Edward I and has been tasked with defending the castle of Ludlow against the Welsh rebels led by Llewelyn ap Gruffydd.As Sir Richard prepares for battle, he meets a beautiful young woman named Lady...