Sylvia Winfield is a former neighbor of the Simpson family. She and her husband Mr. Winfield lived next door until the episode "New Kid on the Block" when they moved to Florida and Ruth and Laura Powers moved into their house. It was explained that they hated the Simpson family so much they moved away. In "Homer's Odyssey" they laughed as Homer contemplated suicide. The couple also appeared in the episodes "Simpson and Delilah" and "Bart's Dog Gets an F", where her name is revealed to be Sylvia. The couple also appear in the opening credits of The Simpsons during the segment where Marge and Maggie pass many characters while driving home.
Sylvia, alongside her husband, eventually moved out, with Homer speculating that they were moving to Florida to "run out the clock" (Implying that at least one of them, if not both, was likely dying).
- In The Simpsons: Hit and Run, three pedestrian templates are modeled after her, one in a purple dress, one in a pink dress and one in an orange dress.