Nina Auchinocloss Straight is the sister of which American writer?
Nina Auchincloss Straight:  She is the mother of writer/director Burr Steers and artist Hugh Auchincloss Steers, half-sister of Gore Vidal, step-sister of First Lady Jacqueline Kennedy Onassis and socialite Lee Radziwill. Gore Vidal: Eugene Louis "Gore" Vidal ( October 3, 1925 – July 31, 2012) was an American writer and public intellectual known for his patrician manner, epigrammatic wit, and polished style of writing.
Gore Vidal