Marguerite is daughter of Marie Claudette and the seventh Mayfair witch. She marries Tyrone Clifford McNamara, who is an opera singer and mothers Rémy, Julien, and Katherine. She has a voodoo altar and collects jars of human skulls, and other disgusting things. Several of her slaves suffered cases of possession. She stole slave's babies. Her second husband seems a mystery, although he was the registered father of Katherine Mayfair.