Margaret Groening, the mother of The Simpsons creator Matt Groening and the basis for the beloved Fox animated family matriarch Marge, has died.
She was 94 years old.
Margaret Groening's death was announced via an obituary in The Oregonian. She passed away in her sleep back on April 22, according to the publication.
Many Groening family details made their way into The Simpsons, among them his mother's maiden name, Wiggum, and his father's name Homer.
Homer Groening, a World War II veteran and cartoonist, died in 1996. In addition to Matt, Margaret is also survived by two daughters ... Lisa and Maggie.
According to her obituary, Margaret taught high school English before starting a family and was a talented needlework artist. It's unclear if she went by Marge.
Just recently, The Simpsons creator confirmed that the inspiration behind the long-running show's fictional town of Springfield was Springfield, Oregon.
The show, which premiered in 1989, is the longest-running animated series on TV, and one of the most successful shows of any genre in any era.