Penelope Mona Simpson (formerly Olsen) (also known as: Penelope Olsen, Martha Stewart, Muddy Mae Suggins, Anita Bonghit, and Mona Stevens) was the mother of Homer Simpson, estranged wife of Abraham Simpson, mother-in-law of Marge Simpson and grandmother of Bart, Lisa and Maggie. Former stepmother of Herbert Powell Sometime before or during the 1960s, Mona married Abraham (grandpa) Simpson, later giving birth to a son, Homer. Before Homer's birth, she had cheated on Abe with a lifeguard, when a love letter was discovered by a mailman after being frozen. The letter stated that in his heart he'll know that the baby she carries is his . When Homer discovers the letter in his late thirties/forties, he questions who his father is, although it is later discovered that Abe's DNA was a perfect match for Homer. At some point before Homer's birth, she also found out about Abe Simpson fathering a child with a Carnival Prostitute before he married her, and shortly after Homer was born, made him promise that he never tell Homer about the incident at the carnival, as she wanted Homer to grow up to respect his father. During the 1960s, whilst Homer was a small child, she became increasingly involved in a hippie movement and political activism. She cites Joe Namath's long hair during Super Bowl III as igniting her beliefs. She takes Homer and Abe to the Woodstock Music Festival, where Homer ends up having been influenced by the hippies. She and other activists, protesting germ research, enter a facility owned by C. Montgomery Burns, destroying all the biological warfare experiments and in the process curing Clancy Wiggum of asthma. Whilst escaping, she stopped to tend to a fallen Burns, who threatened her with arrest. She leaves her husband and son, with Abe later telling Homer that she had died whilst he was at the movies. Abe even goes as far to point out a grave, telling Homer it is Mona's, although the grave belongs to Walt Whitman.After leaving Springfield, her exact movements are unknown, although it is later revealed she resided at the hippie commune Groovy Grove Natural Farm for several years, painting murals of Homer. She sent Homer care packages each week, although Homer was unaware of this, because of his refusal to tip his letter carrier, with Homer collecting the packages years later. During this time, she also cheated on Abe, having a simultaneous relationship at Groovy Grove with two hippies who lived their named Seth and Munchie, who later fondly remembered her as a pretty groovy chick and a demon in the sack . Abe, in the meantime, remained unaware of her whereabouts. When Homer faked his death to avoid work, Mona hears of her son's death on the news and visits her son's still open grave, finding Homer in the grave, who accidentally fell in. She returns to the Simpson house, spending time with Homer and her new family. She also meets Abe, although their dislike only intensifies as Abe remains angry over her leaving him and Homer, whilst Mona becomes angry after learning he had told Homer she was dead. When Homer and Mona go to the post office, to collect years worth of care packages, she is spotted and recognized by Burns. Mona is forced once again to leave Springfield, on the run from the police, although the now Police Chief, Clancy Wiggum, aides her escape after being cured of asthma because of Mona in the 1960s. Sometime later, Homer discovers a hidden message in a newspaper, left by his mother. She is discovered by the police at a diner and is arrested, later put on trial. She is acquitted because of evidence given by Homer, although she is later imprisoned, thanks to Mr. Burns, for signing into a federal park under a false name. Homer attempts to break his mother out of prison on a prison bus, with a police chase insuing. The chase ends when she apparently dies, after the bus drives off a cliff and into some water, where it explodes, which sets off a rock avalanche, burying the bus. Mona, however, narrowly escapses the bus before it went off the cliff. She again goes on the run, where she sends another hidden message in a newspaper to Homer, written whilst eating a Rhode Island-style clam chowder. Mona returns to Springfield again, visiting Homer. Homer has grown sick of his mother's constant leaving and returning and refuses to reconcile with her in order to keep himself from feeling hurt. Later, feeling guilty, he attempts to apologize to his mother. Finding her sitting on an armchair, he apologizes, before realizing his mother is dead. Her death devastates Homer. She is cremated and, sometime after her cremation, the Simpson family watches her recorded will. She leaves Bart her swiss-army knife, Lisa her rebellious spirit (although Lisa takes her earrings) and Marge an old purse made of hemp, asking Homer to release her ashes from the top of a specific mountain at 3:00 pm. Homer completes his mother's wish, releasing the ashes, which are sucked into a missile launch computer within the mountain, owned by Mr. Burns. The ashes stop the missile from launching, preventing the nuclear power plant's waste being blasted to the Amazon rain forest. Homer is arrested, but manages to escape, with help from Marge, Bart and Lisa, destroying the base and fulfilling his mother's final wish. Show less «