Marie Rudisill, Truman Capote's aunt, was in her nineties when she appeared on The Tonight Show with Jay Leno.
She was born and raised in the deep South, if you can't tell by her wonderful accent. She was born Edna Marie Faulk in 1911 in Monroeville, Alabama.
Here are a couple of video compilations of the fruitcake lady answering viewer questions, and telling it like it is. She is the best.
You can read an awesome interview with her from 1997 right here.
She died at 95 in 2006, of old age. She was buried without a funeral, because her son said she didn't want no fuss.