The definition of a fantasyauthor is somewhat diffuse, and a matter of opinion - Jules Verne considered H.G. Wells to be a fantasy author - and there is considerable overlap with science fiction authors and horror fiction authors; however some notable part of the output of the following writers leans more to the fantasy end of the spectrum:
... Keys, scientist
February 1 - S. J. Perelman[?], humorist, author
February 4 - MacKinlay Kantor[?], historian (+ 1977)
February 5 - Walter Gross[?], cabaretist (+ ...