Martha Prince

Martha Prince is Martin Prince's mother and Martin Prince Sr.'s first wife.

History
Martha is probably best known for attempting to sell Martin's extremely valuable Star Wars merchandise to Comic Book Guy for extremely cheap. She was warned by Bart and Milhouse before she sold them and she decided to not to sell it. It was also hinted by Martin that she shoplifts a lot, "stuff she doesn't even need."

She also was responsible for all of the guest getting sick at Martin's birthday party, by serving diseased oysters instead of cake, with the exception of Bart, Lisa, Principal Skinner and Mrs. Krabappel.

Trivia

 * In Wild Barts Can't Be Broken, she is revealed to be a shoplifter who actually steals items she doesn't need, according to Martin.

Appearances
Note: Many of her appearances are brief background roles. The episode in which she has an actual role is in bold.