Margaret "Maggie" Simpson is the baby of the Simpson family, youngest daughter of Homer and Marge (Julie Kavner), and the younger sister of Bart (Nancy Cartwright) and Lisa Simpson, the youngest granddaughter of Abraham, Mona, Clancy, and Jacqueline, the youngest niece of Patty and Selma, the youngest great-niece of Kari Olsen, Gladys Gurney, and Lou Gurney, and also the youngest great-granddaughter of Orville Simpson, Yuma Simpson, Bjorn Olsen, Linnea Olsen, Pepe Bouvier, Bambi Bouvier, Ferdinand Gurney, and Alvarine Gurney.
Family
- Homer Simpson (father)
- Marge Simpson (mother)
- Bart Simpson (older sister)
- Lisa Simpson (older sister)
- Patty Bouvier (maternal aunt)
- Selma Bouvier (maternal aunt)
- Abraham Simpson (paternal grandfather)
- Mona Simpson (paternal grandmother, deceased)
- Clancy Bouvier (maternal grandfather, deceased)
- Jacqueline Bouvier (maternal grandmother)
- Kari Olsen (paternal great-aunt)
- Gladys Gurney (maternal great-aunt, deceased)
- Lou Gurney (maternal great-uncle, deceased)
- Orville Simpson (paternal great-grandfather, deceased)
- Yuma Simpson (paternal great-grandmother, deceased)
- Bjorn Olsen (paternal great-grandfather, deceased)
- Linnea Olsen (paternal great-grandmother, deceased)
- Pepe Bouvier (maternal great-grandfather, deceased)
- Bambi Bouvier (maternal great-grandmother, deceased)
- Orville Simpson (paternal great-grandfather, deceased)
- Yuma Simpson (paternal great-grandmother, deceased)
- Ferdinand Gurney (maternal great-grandfather, deceased)
- Alvarine Gurney (maternal great-grandmother, deceased)
- Abraham Simpson's brothers (paternal great-uncles)
- Hortense Simpson (paternal great-aunt, deceased)