Cammie King Conlon, the former child actress who portrayed the doomed daughter of Rhett Butler and Scarlett O'Hara in 'Gone With the Wind,' has died at the age of 76. She died of lung cancer Wednesday morning at her Fort Bragg home on California's north coast, said friend Bruce Lewis. Her son, Matthew Ned Conlon, was by her side.

Conlon was picked to play the small but pivotal role of Bonnie Blue Butler in the 1939 Civil War epic at age 4. Her character's death in a fall from a pony irrevocably damages Rhett and Scarlett's tumultuous marriage.