Margaret "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).