Flora Miller Biddle, or Flora Miller Irving, was a mother and museum president based in New York. Biddle was born in 1928 and grew up in Aiken, SC, Connecticut, and Taos, New Mexico. Flora would later live with her first husband in New York and New Jersey, where she pursued being a mother and later helped steer the Whitney Museum of American Art as president from 1977-1995. She and her daughters continued to be involved in the museum's operations afterwards. Flora Miller Irving is the granddaughter of Gertrude Vanderbilt Whitney, renowned sculptor and founder of the Whitney Museum of American Art. Biddle's mother and Whitney's daughter was Flora Whitney Miller.
Biddle engaged in several research projects on her grandmother, collaborating with B.H. Friedman on his biography of her in 1978, and writing her own books, The Whitney Women and the Museum They Made in 1999 and Embers of Childhood: Growing Up a Whitney in 2019.