Edith Ewing Bouvier Beale – Wikipedia

Edith Ewing Bouvier Beale (October 5, 1895 – February 5, 1977) was an American socialite known for her reclusive and eccentric lifestyle. Known as “Big Edie”, she was a sister of John Vernou Bouvier III and an aunt of Jacqueline Kennedy Onassis.Her life and relationship with her daughter Edith Bouvier Beale was highlighted in the 1975 documentary Grey Gardens.

https://en.wikipedia.org/wiki/Edith_Ewing_Bouvier_Beale