Ascrod and Vannan were the two who were chosen to infiltrate Redwall Abbey and steal the famous tapestry of Martin the Warrior, planning to take it back to their mother, Queen Silth. They succeeded, and on the way out Ascrod killed the kindly owl Nutwing. However, their treacherous brother Mokkan betrayed them and took the tapestry himself, leaving the remaining Marlfoxes to have a drawnout battle the Redwallers.