For the "real world" article on the writer and editor, please see D.C. Fontana.
D.C. Fontana was a science fiction writer in the 1950s who wrote the story "Journey to Babel", which was published in the March 1953 issue of Incredible Tales magazine. (DS9: "Far Beyond the Stars")
This character was only mentioned in writing.
D.C. Fontana was obviously an homage to the original "Journey to Babel" writer D.C. Fontana.