Several of the cast members (Fionnula Flanagan, Gina McKee, and Dame Maggie Smith) were born outside of the U.S., although they were supposed to be portraying Americans from the American south.
At the beginning, the license plate on the car says "Louisiana 1937".
Gina McKee, who played the mother of Jack and the younger Teensy Melissa Whitman, is only three years older than her on-screen daughter Jacqueline McKenzie and five years older than her on-screen son Matthew Settle.