Margaret Abigail "Maggie" Simpson, Jr.
Mother: Maggie Simpson, Sr. Father: One of the Maggie's band members (hinted) Gerald Samson (hinted) Grandfathers: Retired Homer and Mr. Samson Grandmothers: Empty-Nest Marge and Mrs. Samson Maternal Aunt: President Lisa Maternal Uncles: Mooch Bart and Hugo Simpson II (non-canon) Maternal First-Cousins: Jiff Simpson, Skippy Simpson and Zia Simpson Maternal Uncle-in-Law: Milhouse Van Houten Ex-Aunt-in-Law: Jenda Great-Grandfathers: Abe Simpson and Clancy Bouvier Great-Grandmothers: Mona Simpson and Jacqueline Bouvier Grandaunts: Patty and Selma Bouvier Great-Grandaunt: Hortense Simpson Great-Granduncles: Bill, Cyrus, Chet, Tyrone and Hubert Simpson Half-Granduncle: Herbert Powell Half-Grandaunt: Abbie Great-Great-Grandfathers: Ferdinand Gurney, Pépé Bouvier, Bjorn Olsen and Orville Simpson Great-Great-Grandmothers: Alvarine Bisque, Bambi Petitbois, and Yuma Hickman Great-Grandaunts: Gladys Gurney, Charlene Bouvier and Hortense Simpson Great-Granduncles: Uncle Lou, Chester Bouvier, Arthur Bouvier, JoJo Bouvier, Herman Bouvier, Karl Olsen, Cyrus Simpson, Bill Simpson, Chet Simpson, Hubert Simpson, Fester Simpson and Tyrone Simpson Step-Great-Grandmother: Rita LaFleur First-Twice-Removeds: Cousin Dot, Pierre Bouvier, Alfreda Bouvier II, Dorothé Bouvier, Rowena Bouvier, Tootsie Bouvier, Marnie Simpson, Omar Simpson, Bernie Olsen, Frank Simpson, Valerie Togasaki-Rothman, Unnamed and Dr. Simpson Half-First-Once-Removed: Jessie Simpson Second-Once-Removeds: Stanley Simpson, Axel Bouvier, Polly Bouvier, Holly Bouvier, Lolly Bouvier and Dolly Bouvier Double-Second-Once-Removeds: Brit, Lily, and Magpie Simpson Adoptive-First-Once-Removed: Ling Bouvier Great-Grandaunts-in-Law: Alfreda LeDoux and 15 unnamed First-Twice-Removeds-in-Law: Miranda Potter and Dave Togasaki-Rothman Margaret Abigail "Maggie" Simpson, Jr. is Maggie's baby daughter in " Bart to the Future" and " Holidays of Future Passed".
She looks exactly like her mother did as a baby. She was introduced in "Bart to the Future". Lisa asks where Maggie is, and Marge holds up Maggie Jr, at first implying that Maggie never aged, but Marge then mentions her mom, "Maggie Sr.". She also appears in "Holidays of Future Passed". She is born on Christmas Eve in this episode, and she, her mother Maggie, and Marge arrive at The Simpsons' home the next morning. Her name is not mentioned, however, and in both these episodes her father is never revealed ever (although "
Days of Future Future" hinted that it may be Gerald Samson).