Constance was Redwall Abbey's Badger Mother during Matthias' time. During the Winter of the Early Snowdrop, Constance and Methuselah repeatedly attempted to locate the Redwall Warrior's Code, however they were unsuccessful.
She helped greatly during the Summer of the Late Rose. All of Cluny's horde hated and feared her for her courage and strength. She constructed a giant yew crossbow with help from the solitary Beaver. The crossbow was fired at Cheesethief, whom she had mistaken for Cluny the Scourge. She was thought to be less bright but proved otherwise when her knowledge of the phases of the moon helped Matthias and Methuselah solve several riddles.
When the Abbey was under attack by General Ironbeak in the Summer of the Golden Plain, Constance helped Cornflower in her masquerade as the ghost of Martin the Warrior, providing the deep voice. Constance was also considered leader of the Redwallers during this time of war. She also rescued Stryk Redkite from Ironbeak's attacking rooks.
Later, when Matthias, Mattimeo and their companions returned to Redwall, Constance became friends with Orlando the Axe. She taught his daughter Auma all she knew, and later the young badgermaid succeeded her as Badgermother of Redwall Abbey.
- Brian Jacques' maternal grandmother, Sissy McGinniss, was the inspiration for Constance.