Erin Chambers is Rita Barksdale's daughter, who was raised to be a trophy wife. Based on information in the episode "I Don't," it appears her maiden name was Chambers.

Erin married Brian Chambers in "I Don't" because he apparently gave her herpes and convinced her she would be useless to anyone else.

In "Aunt Nauseum," Erin wants a divorce but is eventually talked out of it by Brian and her grandmother, leading to a second honeymoon for the two.