The legend of Black Agnes. Black Agnes is fondly remembered for her galant defence of Dunbar Castle from a combined English army during the winter of 1337. Along with a small garrison of archers and servants she courageously defended her castle, and with the daring help of Alexander Ramsay and his reinforcements they eventually defeated the neermy. The siege lasted a full five months during which they were nearing starvation. (Countess of Dunbar and March). (Died 1369).