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Marie "La Coquille" Saint Petitbois (nee Jacques) is the wife of Henri Petitbois and Bambi Petitbois' mother. She is the maternal grandmother of Clancy Bouvier, the grandmother-in-law of Jacqueline Bouvier (nee Gurney), and the paternal great-grandmother of Marge, Patty Bouvier, and Selma Bouvier, the mother-in-law of Pépé Bouvier, and the maternal great-great-grandmother to Bart and Lisa and Maggie Simpson.

Behind the Laughter

"La Coquille" is a French word translated as "The Shell".