Maggie Peace is ’s older sister, ’s mother, and ’s lover; she is also a descendant of . Despite John’s marriage to , Maggie and John are in love, having a tender affair that is always underscored by John’s “sentimental” sadness “about what his grandfather had done to a member of her family long ago.” After John’s plan to provide for baby Corwin ends in Billy having to flee the area (and join the army), Maggie turns against John, blaming him for Billy’s dangerous plight. In passing, later mentions that after the overlapping traumas of Maggie’s life, namely John’s arrest and Billy’s turn to religious extremism, Maggie started becoming more dependent on alcohol.