Maria Shriver-Kennedy Quimby is Rainier Wolfcastle's ex-wife.
When she was married to Rainier Wolfcastle, the wedding was photographed by Homer. Wolfcastle decided to take revenge to him, and Maria told him that he had promised a day without revenge, which Wolfcastle quickly cancelled.
Sometime afterwards, Maria and Rainier got a divorce. Maria also had a custody battle.
Maria is first seen with her ex-husband, attending Freddy Quimby's 18th Birthday Party at Mayor Quimby's house, where she tries to comfort him when he started feeling depressed from the failure of his then-recent movie, especially his being reminded of its failure by both Bart and Chief Wiggum.
- Episode – "The Boy Who Knew Too Much"
- Episode – "The Homer They Fall"
- Episode – "The Bart Wants What It Wants" (mentioned)
- Episode – "Homerazzi"
- Episode – "All About Lisa"