Ms. Cowles variously gave her birthplace as Boston and Montclair, N.J., her parents as Matthew Fenton and Eleanor Pearl Fenton, and the year of her birth as anywhere from 1910 to 1917. Census records and reminiscences of friends and relatives indicate that she was born on Jan. 20, 1908, in New York City, the daughter of Morris and Lena Freidman, and that her name at birth was Florence.
--New York Times
I think I may have actually bought a copy of her signature
folly magazine, Flair, back when I was a high school kid with pretensions to culture.